Orchidaceae vs genus Vanilla

Orchidaceae and genus Vanilla both are nouns.

Word	Noun	Adjective	Verb	Adverb
Orchidaceae	Yes	No	No	No
genus Vanilla	Yes	No	No	No

Orchidaceae (noun)	genus Vanilla (noun)
enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers	large genus of tropical climbing orchids; Old and New Worlds