Otus vs bird genus

Otus and bird genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Otus	Yes	No	No	No
bird genus	Yes	No	No	No

As nouns, bird genus is a hypernym of Otus; that is, bird genus is a word with a broader meaning than Otus:

Otus (noun)	bird genus (noun)
a genus of Strigidae containing the Scops owl (Otus)	a genus of birds