ground beetle vs carabid beetle

ground beetle and carabid beetle both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground beetle	Yes	No	No	No
carabid beetle	Yes	No	No	No

As nouns, ground beetle and carabid beetle are synonyms defined as:

ground beetle and carabid beetle: predacious shining black or metallic terrestrial beetle that destroys many injurious insects

ground beetle (noun)	carabid beetle (noun)
predacious shining black or metallic terrestrial beetle that destroys many injurious insects	predacious shining black or metallic terrestrial beetle that destroys many injurious insects