hyrax vs rock hyrax

hyrax and rock hyrax both are nouns.

Word	Noun	Adjective	Verb	Adverb
hyrax	Yes	No	No	No
rock hyrax	Yes	No	No	No

As nouns, rock hyrax is a hyponym of hyrax; that is, rock hyrax is a word with a more specific, narrower meaning than hyrax:

hyrax: any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes
rock hyrax: hyrax that lives in rocky areas

Other hyponyms of hyrax include Procavia capensis, rock rabbit.

hyrax (noun)	rock hyrax (noun)
any of several small ungulate mammals of Africa and Asia with rodent-like incisors and feet with hooflike toes	hyrax that lives in rocky areas