lexis

 
Pronunciation: /ˈlɛksɪs/

noun

[mass noun]
  • the total stock of words in a language.
  • the level of language consisting of vocabulary, as opposed to grammar or syntax: the distinction between grammar and lexis

Origin:

1950s (denoting the wording in a piece of writing): from Greek, literally 'word' (see lexicon)

Grammar

Another word for vocabulary: all the words that are used in a language, or a dialect of a language.