corn borer vs corn borer moth

corn borer and corn borer moth both are nouns.

Word	Noun	Adjective	Verb	Adverb
corn borer	Yes	No	No	No
corn borer moth	Yes	No	No	No

As nouns, corn borer and corn borer moth are synonyms defined as:

corn borer and corn borer moth: native to Europe; in America the larvae bore into the stem and crown of corn and other plants

Other synonyms of corn borer include European corn borer moth, Pyrausta nubilalis.

corn borer (noun)	corn borer moth (noun)
native to Europe; in America the larvae bore into the stem and crown of corn and other plants	native to Europe; in America the larvae bore into the stem and crown of corn and other plants
larva of the European corn borer moth; a serious pest of maize