family Brassicaceae vs Rhoeadales

family Brassicaceae and Rhoeadales both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Brassicaceae	Yes	No	No	No
Rhoeadales	Yes	No	No	No

family Brassicaceae (noun)	Rhoeadales (noun)
a large family of plants with four-petaled flowers; includes mustards, cabbages, broccoli, turnips, cresses, and their many relatives	an order of dicotyledonous plants, containing the families Capparidaceae, Cruciferae, Moringaceae, Papaveraceae, Resedaceae, and Tovariaceae (Rhoeadales, Papaverales)