Strix aluco vs owl

Strix aluco and owl both are nouns.

Word	Noun	Adjective	Verb	Adverb
Strix aluco	Yes	No	No	No
owl	Yes	No	No	No

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

Strix aluco: reddish-brown European owl having a round head with black eyes
owl: nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes

Other hypernyms of Strix aluco include bird of Minerva, bird of night, hooter.

Strix aluco (noun)	owl (noun)
reddish-brown European owl having a round head with black eyes	nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes