May beetle vs cockchafer

May beetle and cockchafer both are nouns.

Word	Noun	Adjective	Verb	Adverb
May beetle	Yes	No	No	No
cockchafer	Yes	No	No	No

As nouns, May beetle and cockchafer are synonyms defined as:

May beetle and cockchafer: any of various large European beetles destructive to vegetation as both larvae and adult

Other synonyms of May beetle include May bug, Melolontha melolontha.

May beetle (noun)	cockchafer (noun)
any of various large European beetles destructive to vegetation as both larvae and adult	any of various large European beetles destructive to vegetation as both larvae and adult
any of various large usually brown North American leaf-eating beetles common in late spring; the larvae feed on roots of grasses etc.