vocabulary

ot noun

1. The collection of words a person knows and uses. My Russian vocabulary is very limited.
2. The stock of words used in a particular field. The vocabulary of social sciences is often incomprehensible to ordinary people.
3. The words of a language collectively. The vocabulary of any language is influenced by contacts with other cultures.
4. A usually alphabetized and explained collection of words e.g. of a particular field, or prepared for a specific purpose, often for learning.