vocabulary

1 the special terms or expressions of a particular group or field scientific vocabulary Synonyms argot, cant, dialect, jargon, jive, language, lingo, patois, patter, shop, shoptalk, slang, terminologyRelated Words colloquial, colloquialism, idiom, localism, parlance, pidgin, provincialism, regionalism, speech, vernacular, vernacularism; slanguage; bureaucratese, computerese, cyberspeak, educationese, governmentese, journalese, technobabble

2 the stock of words, pronunciation, and grammar used by a people as their basic means of communication children learn enough of the common vocabulary to make themselves understood by around the age of two Synonyms lingo, mother tongue, speech, tongue, languageRelated Words acrolect; argot, cant, colloquial, dialect, idiolect, idiom, jargon, parlance, patois, patter, pidgin, slang, slanguage, vernacular; colloquialism, localism, provincialism, regionalism, shibboleth, vernacularism; terminology; coinage, modernism, neologism