bean beetle vs lady beetle

bean beetle and lady beetle both are nouns.

Word	Noun	Adjective	Verb	Adverb
bean beetle	Yes	No	No	No
lady beetle	Yes	No	No	No

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

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

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

bean beetle (noun)	lady beetle (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