genus Sceloglaux vs bird genus

genus Sceloglaux and bird genus both are nouns.

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

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

genus Sceloglaux: a genus of Strigidae containing the laughing owl, whekau, or white-faced owl (Sceloglaux)
bird genus: a genus of birds

genus Sceloglaux (noun)	bird genus (noun)
a genus of Strigidae containing the laughing owl, whekau, or white-faced owl (Sceloglaux)	a genus of birds