Dryopteridaceae vs fern family

Dryopteridaceae and fern family both are nouns.

Word	Noun	Adjective	Verb	Adverb
Dryopteridaceae	Yes	No	No	No
fern family	Yes	No	No	No

As nouns, fern family is a hypernym of Dryopteridaceae; that is, fern family is a word with a broader meaning than Dryopteridaceae:

Dryopteridaceae: alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems
fern family: families of ferns and fern allies

Dryopteridaceae (noun)	fern family (noun)
alternative names for one of a number of families into which the family Polypodiaceae has been subdivided in some classification systems	families of ferns and fern allies