Language & Words — C1 English Vocabulary
This C1 vocabulary list gathers 60 advanced English words about language & words — how language itself works. Every word comes with a simple definition, its British-English pronunciation and a natural example sentence, so you learn each one in real context. When you are ready, open the flashcards to practise and remember them for good.
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Using language & words words in English
This is vocabulary for talking about vocabulary, and it opens with the best-known near-homophone trap in academic English: etymology is the study of word origins, while entomology is the study of insects. The page then sets out the branches of linguistics — each of which ends in -ics and therefore takes a singular verb — and separates the four words for informal language.
What to watch out for
Etymology is words; entomology is insects
They differ by two letters and are constantly confused, including in print. Etymology traces where a word came from and how its meaning changed. Entomology is a branch of zoology. A memory hook that works: entomology contains ent, as in insect names, while etymology shares its opening with etymon, the original form of a word.
The branches of linguistics take singular verbs
Semantics is, syntax is, phonetics is, morphology is — like physics and economics, these name fields and take singular agreement. Semantics studies meaning, syntax sentence structure, morphology word formation, and phonetics speech sounds. A phoneme is a unit of sound that can change meaning, which is why it is not the same thing as a letter.
Colloquial, vernacular, idiomatic, dialectal
Colloquial means belonging to ordinary conversation rather than to formal writing — it is a neutral description, not a criticism. Vernacular is the everyday language of a place or group, often contrasted with a prestige or official language. Dialectal means specific to a regional variety. Idiomatic means natural-sounding to a native speaker, which is a compliment and applies at any level of formality.
Words learners mix up
Three clusters here are worth learning as systems rather than as words: how new vocabulary enters a language, the machinery of word-building, and the terms for how a word is said. Each contains at least one pair that is routinely swapped.
Where new words come from
| Word | What it actually means | In a sentence |
|---|---|---|
| loanword | A word taken from another language and kept — kindergarten, sofa, tsunami. | English is unusually hospitable to loanwords. |
| cognate | A word related to one in another language by shared ancestry, not by borrowing. | English father and German Vater are cognates. |
| neologism | A newly coined word or sense, still recognisably new. | Doomscrolling is a recent neologism. |
| coinage | The act of inventing a word, and the word invented. Slightly broader than neologism. | A coinage that never caught on. |
| acronym | An abbreviation pronounced as a word — NATO, radar. If you say the letters, it is an initialism. | Laser began as an acronym. |
The distinction that matters is loanword against cognate: a loanword crossed over recently and a cognate never crossed at all — both languages inherited it. Confusing them makes an etymology claim wrong rather than imprecise. And the strict definition of acronym excludes BBC and FBI, though everyday usage covers both.
How words are built and changed
| Word | What it actually means | In a sentence |
|---|---|---|
| prefix | An element added at the front that changes meaning: un-, re-, anti-. | The prefix dis- reverses the verb. |
| suffix | An element added at the end, and it usually changes the word class as well as the sense. | The suffix -ness makes an abstract noun. |
| inflection | A change of form marking grammar — plural, tense, case — without making a new word. | English has very little inflection left. |
| derivation | Making a genuinely new word from an existing one, usually by affix. | Happiness is a derivation from happy. |
| conjugation | The full set of inflected forms of a verb, or the act of listing them. | The conjugation of the French irregular verbs. |
The line between inflection and derivation is the one worth holding on to: walked is the same word as walk in a different grammatical form, while walker is a new word with its own dictionary entry. That is precisely why walked is not listed separately and walker is.
How it is said
| Word | What it actually means | In a sentence |
|---|---|---|
| articulation | The physical forming of speech sounds. Also, more loosely, the clear expression of an idea. | Careful articulation of the final consonants. |
| intonation | The rise and fall of pitch across an utterance. It carries meaning that words do not. | Rising intonation turns it into a question. |
| enunciate | To pronounce clearly and distinctly. A deliberate act, often in performance or teaching. | He enunciated each syllable. |
| syllable | A unit of pronunciation with one vowel sound. The building block stress is assigned to. | Photography has four syllables. |
| accent | The pronunciation features that place a speaker regionally or socially. About sound only. | A soft west-country accent. |
Two things get muddled here constantly. Accent is pronunciation, while a dialect includes vocabulary and grammar too — everyone has an accent, and only some people speak a distinct dialect. And intonation is not the same as stress: stress sits on a syllable, intonation runs across a whole phrase.
Collocations that sound natural
Writing about language demands precision about which technical term goes with which verb, and several of these nouns take prepositions that seem arbitrary until they are learned as pairs.
etymology
the etymology oftrace the etymologya disputed etymologyfolk etymology
Takes of. Folk etymology is a fixed term for a popular but false origin story — the kind that explains an acronym after the fact — and it is a technical label, not an insult.
register
a formal registershift registerappropriate to the registerregister-appropriate
In linguistics, the level of formality a situation calls for. Note the collision with the everyday senses of a list and of recording your name: only the linguistic one takes adjectives like formal and casual.
jargon
technical jargonimpenetrable jargoncut through the jargon
Uncountable, and almost always disapproving from outside the group that uses it. From inside, the same vocabulary would be called terminology, which is the neutral word.
usage
common usagea usage notein general usagedisputed usage
The way a language is actually used, as opposed to how a rule says it should be. Uncountable in that sense, and countable for a specific instance: a usage first recorded in 1892.
diction
careful dictionpoetic dictionclarity of diction
Two senses that pull apart: the choice of words in writing, and clarity of pronunciation in speech. A singer with good diction is understood; a poet with heightened diction has chosen unusual words.
phrasing
awkward phrasingrephrase the questioncareful phrasing
The way words are put together in a particular instance, rather than the words themselves — which is why the phrasing is unfortunate criticises the arrangement rather than the vocabulary.
Formal, neutral or informal?
Terms about language are unusually prone to carrying judgements about the people who use it. Several of these are neutral in linguistics and loaded everywhere else.
- colloquialNeutral · often misread as negativeBelonging to ordinary conversation. In linguistics it describes a register with no criticism attached, but a learner told their writing is colloquial should hear "too informal for this task", which is how teachers use it.
- slangInformal · group-markedVery informal vocabulary specific to a group, and usually short-lived. Distinct from colloquial language, which is simply conversational; slang additionally signals membership, which is much of its point.
- vernacularFormal · sociolinguisticThe everyday language of a place or community, usually set against an official or prestige variety. Its history is in describing languages other than Latin, and it still carries a faint sense of the language of ordinary people.
- archaicTechnical · about ageNo longer in ordinary use but still recognised — thou, whence. Dictionaries use it as a precise label, so applying it to a word merely out of fashion overstates the case; dated is the milder term.
- antiquatedCritical · about suitabilityOld-fashioned to the point of being unfit for use. Where archaic describes a word’s age neutrally, this one complains — it fits systems and attitudes more naturally than vocabulary.
- parlanceFormal · always with a modifierThe particular way a group speaks. It almost never appears alone: the fixed frames are in common parlance and in legal parlance, and using it bare sounds wrong.
- garbledNegative · about transmissionConfused and distorted, usually because something went wrong in the passing on. It blames the channel rather than the speaker, which is why a garbled message is a different complaint from an incoherent one.
- ellipticalFormal · two sensesIn grammar, leaving out words that can be understood from context. In criticism, deliberately obscure. The second is a polite way of saying a writer is hard to follow on purpose.
Sentences to try
Four frames for writing about language. Note the singular verb in the second one.
- The etymology of the word is disputed.
- Semantics is the branch of linguistics concerned with meaning.
- The construction is colloquial but perfectly idiomatic.
- English and German cognates often diverge in meaning.
Questions about language & words vocabulary
What is the difference between etymology and entomology?
Etymology is the study of the origin and historical development of words: the etymology of "salary" traces back to Roman salt rations. Entomology is the scientific study of insects. The two are confused so often that the mix-up has become a standing joke among linguists, and it appears in edited publications regularly. If you are writing about words, the word you want has no n after the e, and it shares its root with etymon, meaning the original form of a word.
Is "semantics" singular or plural?
Singular when it names the field: Semantics is concerned with meaning. The same applies to every branch of linguistics ending in -ics — phonetics, pragmatics, stylistics — and to physics, economics and mathematics more widely. There is a second, everyday use of semantics meaning quibbling over word choice, as in that is just semantics, which also takes a singular verb. Linguistics itself behaves the same way: Linguistics is a social science.
What is the difference between colloquial and idiomatic?
Colloquial describes a level of formality: language belonging to ordinary spoken conversation rather than to formal writing. It is descriptive, not pejorative — a colloquial expression is simply an informal one. Idiomatic describes naturalness: language that sounds the way a native speaker would actually put it. The two are independent, so a sentence can be formal and idiomatic, or colloquial and unidiomatic. Learners are often told their English is grammatically correct but not idiomatic, which is a comment about phrasing rather than about register.