genus Nomia vs arthropod genus

genus Nomia and arthropod genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Nomia	Yes	No	No	No
arthropod genus	Yes	No	No	No

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

genus Nomia (noun)	arthropod genus (noun)
a genus of bee; some are important pollinators of legumes	a genus of arthropods