owl vs raptor

owl and raptor both are nouns.

Word	Noun	Adjective	Verb	Adverb
owl	Yes	No	No	No
raptor	Yes	No	No	No

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

owl: nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes
raptor: any of numerous carnivorous birds that hunt and kill other animals

Other hypernyms of owl include bird of prey, raptorial bird.

owl (noun)	raptor (noun)
nocturnal bird of prey with hawk-like beak and claws and large head with front-facing eyes	any of numerous carnivorous birds that hunt and kill other animals