vocabulary (n.)youdaoicibaDictYouDict[vocabulary 词源字典]
1530s, "list of words with explanations," from Medieval Latin vocabularium "a list of words," from Latin vocabulum "word, name, noun," from vocare "to name, call" (see voice (n.)). Meaning "range of words in the language of a person or group" is first attested 1753.[vocabulary etymology, vocabulary origin, 英语词源]