family Orchidaceae vs genus Plectorrhiza

family Orchidaceae and genus Plectorrhiza both are nouns.

Word	Noun	Adjective	Verb	Adverb
family Orchidaceae	Yes	No	No	No
genus Plectorrhiza	Yes	No	No	No

family Orchidaceae (noun)	genus Plectorrhiza (noun)
enormous cosmopolitan family of perennial terrestrial or epiphytic plants with fleshy tubers or rootstocks and unusual flowers	small genus of Australian orchids, containing Plectorrhiza brevilabris, Plectorrhiza erecta, and Plectorrhiza tridentata (Plectorrhiza)