golden-eyed fly vs stink fly

golden-eyed fly and stink fly both are nouns.

Word	Noun	Adjective	Verb	Adverb
golden-eyed fly	Yes	No	No	No
stink fly	Yes	No	No	No

As nouns, stink fly is a hypernym of golden-eyed fly; that is, stink fly is a word with a broader meaning than golden-eyed fly:

golden-eyed fly: a variety of green lacewing
stink fly: pale green unpleasant-smelling lacewing fly having carnivorous larvae

Other hypernyms of golden-eyed fly include chrysopid, green lacewing.

golden-eyed fly (noun)	stink fly (noun)
a variety of green lacewing	pale green unpleasant-smelling lacewing fly having carnivorous larvae