lobe-finned fish vs bony fish

lobe-finned fish and bony fish both are nouns.

Word	Noun	Adjective	Verb	Adverb
lobe-finned fish	Yes	No	No	No
bony fish	Yes	No	No	No

As nouns, bony fish is a hypernym of lobe-finned fish; that is, bony fish is a word with a broader meaning than lobe-finned fish:

lobe-finned fish: any fish of the order Crossopterygii; most known only in fossil form
bony fish: any fish of the class Osteichthyes

lobe-finned fish (noun)	bony fish (noun)
any fish of the order Crossopterygii; most known only in fossil form	any fish of the class Osteichthyes