Athene noctua vs owl

Athene noctua and owl both are nouns.

Word	Noun	Adjective	Verb	Adverb
Athene noctua	Yes	No	No	No
owl	Yes	No	No	No

As nouns, owl is a hypernym of Athene noctua; that is, owl is a word with a broader meaning than Athene noctua:

Athene noctua: small European owl
owl: nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes

Other hypernyms of Athene noctua include bird of Minerva, bird of night, hooter.

Athene noctua (noun)	owl (noun)
small European owl	nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes