1 the (principal) words used in a language or a particular book or branch of science etc. or by a particular author (scientific vocabulary; the vocabulary of Shakespeare).
2 a list of these, arranged alphabetically with definitions or translations.
3 the range of words known to an individual (his vocabulary is limited).
4 a set of artistic or stylistic forms or techniques, esp. a range of set movements in ballet etc.
Etymology: med.L vocabularius, -um (as VOCABLE)
Useful english dictionary. 2012.