nomia vs arthropod genus

nomia and arthropod genus both are nouns.

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

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

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