Mexican bean beetle vs genus Epilachna

Mexican bean beetle and genus Epilachna both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mexican bean beetle	Yes	No	No	No
genus Epilachna	Yes	No	No	No

Mexican bean beetle (noun)	genus Epilachna (noun)
introduced into the United States from Mexico; feeds on the foliage of the bean plant	genus of ladybugs native to Mexico and Central America; both larvae and adults feed on plants