vocabulary
US /voʊˈkæb.jə.ler.i/
UK /voʊˈkæb.jə.ler.i/

1.
vocabulaire
all the words known and used by a particular person
:
•
She has an extensive English vocabulary.
Elle a un vaste vocabulaire anglais.
•
Reading helps to expand your vocabulary.
La lecture aide à élargir votre vocabulaire.
2.
vocabulaire, lexique
a list or collection of words, often with their meanings, used in a particular language or subject
:
•
The book includes a vocabulary at the end of each chapter.
Le livre comprend un vocabulaire à la fin de chaque chapitre.
•
This technical vocabulary is specific to the field of engineering.
Ce vocabulaire technique est spécifique au domaine de l'ingénierie.