Brassicaceae vs genus Erysimum

Brassicaceae and genus Erysimum both are nouns.

Word	Noun	Adjective	Verb	Adverb
Brassicaceae	Yes	No	No	No
genus Erysimum	Yes	No	No	No

Brassicaceae (noun)	genus Erysimum (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	large genus of annual or perennial herbs some grown for their flowers and some for their attractive evergreen leaves; Old World and North America