lexis
/ˈleksɪs/noun
mass noun
1- the total stock of words in a language（某一语言的全部）词汇：
a notable loss of English lexis.
英语词汇的明显丧失。
1.1
- the level of language consisting of vocabulary, as opposed to grammar or syntax（与语法和句法相对的）词汇层。
词源
1950s （denoting the wording， as opposed to other elements， in a piece of writing）： from Greek， literally 'word' （see LEXICON）.