amphibian family vs subphylum Vertebrata

amphibian family and subphylum Vertebrata both are nouns.

Word	Noun	Adjective	Verb	Adverb
amphibian family	Yes	No	No	No
subphylum Vertebrata	Yes	No	No	No

amphibian family (noun)	subphylum Vertebrata (noun)
any family of amphibians	fishes, amphibians, reptiles, birds, mammals