Mexican bean beetle vs ladybird

Mexican bean beetle and ladybird both are nouns.

Word	Noun	Adjective	Verb	Adverb
Mexican bean beetle	Yes	No	No	No
ladybird	Yes	No	No	No

As nouns, ladybird is a hypernym of Mexican bean beetle; that is, ladybird is a word with a broader meaning than Mexican bean beetle:

Mexican bean beetle: introduced into the United States from Mexico; feeds on the foliage of the bean plant
ladybird: small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests

Other hypernyms of Mexican bean beetle include lady beetle, ladybeetle, ladybird beetle, ladybug.

Mexican bean beetle (noun)	ladybird (noun)
introduced into the United States from Mexico; feeds on the foliage of the bean plant	small round bright-colored and spotted beetle that usually feeds on aphids and other insect pests