family Brassicaceae vs genus Heliophila

family Brassicaceae and genus Heliophila both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Brassicaceae	Yes	No	No	No
genus Heliophila	Yes	No	No	No

family Brassicaceae (noun)	genus Heliophila (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	genus of South African flowering herbs and subshrubs