staghorn coral vs madrepore

staghorn coral and madrepore both are nouns.

Word	Noun	Adjective	Verb	Adverb
staghorn coral	Yes	No	No	No
madrepore	Yes	No	No	No

As nouns, madrepore is a hypernym of staghorn coral; that is, madrepore is a word with a broader meaning than staghorn coral:

staghorn coral: large branching coral resembling antlers
madrepore: corals having calcareous skeletons aggregations of which form reefs and islands

Other hypernyms of staghorn coral include madriporian coral, stony coral.

staghorn coral (noun)	madrepore (noun)
large branching coral resembling antlers	corals having calcareous skeletons aggregations of which form reefs and islands