mustard family vs Brassica

mustard family and Brassica both are nouns.

Word	Noun	Adjective	Verb	Adverb
mustard family	Yes	No	No	No
Brassica	Yes	No	No	No

mustard family (noun)	Brassica (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	mustards: cabbages, cauliflowers, turnips, etc.