You searched for: “vocabulary word
vocabulary word (s) (noun), vocabulary words (pl)
Words words.

A pleonasm, or redundancy, since "vocabulary" is defined as "words"; however, the two elements are now so widely used together that very few people seem to be aware of their repetitious existence.

(English-Vocabulary Words from Latin and Greek Units Prefixes, Roots, and Suffixes that Every Advanced-English Speaker and Reader Should Know)