longicorn beetle vs longicorn

longicorn beetle and longicorn both are nouns.

Word	Noun	Adjective	Verb	Adverb
longicorn beetle	Yes	No	No	No
longicorn	Yes	No	No	No

As nouns, longicorn beetle and longicorn are synonyms defined as:

longicorn beetle and longicorn: long-bodied beetle having very long antennae

Other synonyms of longicorn beetle include long-horned beetle.

longicorn beetle (noun)	longicorn (noun)
long-bodied beetle having very long antennae	long-bodied beetle having very long antennae