order Filicales vs family Polypodiaceae

order Filicales and family Polypodiaceae both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Filicales	Yes	No	No	No
family Polypodiaceae	Yes	No	No	No

order Filicales (noun)	family Polypodiaceae (noun)
true (leptosporangiate) ferns	ferns: a large family that in some classification systems has been subdivided into several families (including Aspleniaceae and Blechnaceae and Davalliaceae and Dennstaedtiaceae and Dryopteridaceae and Oleandraceae and Pteridaceae)