Capra ibex vs wild goat

Capra ibex and wild goat both are nouns.

Word	Noun	Adjective	Verb	Adverb
Capra ibex	Yes	No	No	No
wild goat	Yes	No	No	No

As nouns, wild goat is a hypernym of Capra ibex; that is, wild goat is a word with a broader meaning than Capra ibex:

Capra ibex: wild goat of mountain areas of Eurasia and northern Africa having large recurved horns
wild goat: undomesticated goat

Capra ibex (noun)	wild goat (noun)
wild goat of mountain areas of Eurasia and northern Africa having large recurved horns	undomesticated goat