Upupa epops vs hoopoe

Upupa epops and hoopoe both are nouns.

Word	Noun	Adjective	Verb	Adverb
Upupa epops	Yes	No	No	No
hoopoe	Yes	No	No	No

As nouns, hoopoe is a hypernym of Upupa epops; that is, hoopoe is a word with a broader meaning than Upupa epops:

Upupa epops: pinkish-brown hoopoe with black-and-white wings
hoopoe: any of several crested Old World birds with a slender downward-curved bill

Other hypernyms of Upupa epops include hoopoo.

Upupa epops (noun)	hoopoe (noun)
pinkish-brown hoopoe with black-and-white wings	any of several crested Old World birds with a slender downward-curved bill