Loxomataceae vs fern family

Loxomataceae and fern family both are nouns.

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

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

Loxomataceae (noun)	fern family (noun)
very small family of New Zealand ferns	families of ferns and fern allies