gall gnat vs dipteran

gall gnat and dipteran both are nouns.

Word	Noun	Adjective	Verb	Adverb
gall gnat	Yes	No	No	No
dipteran	Yes	No	No	No

As nouns, dipteran is a hypernym of gall gnat; that is, dipteran is a word with a broader meaning than gall gnat:

gall gnat: fragile mosquito-like flies that produce galls on plants
dipteran: insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing

Other hypernyms of gall gnat include dipteron, dipterous insect, two-winged insects.

gall gnat (noun)	dipteran (noun)
fragile mosquito-like flies that produce galls on plants	insects having usually a single pair of functional wings (anterior pair) with the posterior pair reduced to small knobbed structures and mouth parts adapted for sucking or lapping or piercing