gallfly vs gall wasp

gallfly and gall wasp both are nouns.

Word	Noun	Adjective	Verb	Adverb
gallfly	Yes	No	No	No
gall wasp	Yes	No	No	No

As nouns, gallfly and gall wasp are synonyms defined as:

gallfly and gall wasp: small solitary wasp that produces galls on oaks and other plants

Other synonyms of gallfly include cynipid gall wasp, cynipid wasp.

gallfly (noun)	gall wasp (noun)
any of various insects that deposit their eggs in plants causing galls in which the larvae feed	small solitary wasp that produces galls on oaks and other plants
small solitary wasp that produces galls on oaks and other plants
fragile mosquito-like flies that produce galls on plants