vocabulary

definition: a language user's knowledge of words
example:
speech part: noun
synonyms: lexicon mental lexicon
definition: the system of techniques or symbols serving as a means of expression, typically in an art or craft
example: The professor introduced a wide vocabulary of mathematical techniques.
speech part: noun
synonyms:
definition: a listing of the words used in some enterprise
example:
speech part: noun
synonyms:

vocabulary is explained and pronounced

How vocabulary is being used?