Athene noctua vs hooter

Athene noctua and hooter both are nouns.

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

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

Athene noctua: small European owl
hooter: 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, owl.

Athene noctua (noun)	hooter (noun)
small European owl	nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes
	a device on an automobile for making a warning noise
	informal terms for the nose