Orchidaceae vs Selenipedium

Orchidaceae and Selenipedium both are nouns.

Word	Noun	Adjective	Verb	Adverb
Orchidaceae	Yes	No	No	No
Selenipedium	Yes	No	No	No

Orchidaceae (noun)	Selenipedium (noun)
enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers	genus of tall reedlike tropical American orchids; includes species with pods used locally as a substitute for vanilla