Milvus vs bird genus

Milvus and bird genus both are nouns.

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

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

Milvus (noun)	bird genus (noun)
a genus including the common European kits	a genus of birds