genus Sisymbrium vs mustard family

genus Sisymbrium and mustard family both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Sisymbrium	Yes	No	No	No
mustard family	Yes	No	No	No

genus Sisymbrium (noun)	mustard family (noun)
genus of Old World annual or biennial or perennial herbs with racemose flowers; many are considered to be weeds	a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives