stone fly vs insect

stone fly and insect both are nouns.

Word	Noun	Adjective	Verb	Adverb
stone fly	Yes	No	No	No
insect	Yes	No	No	No

As nouns, insect is a hypernym of stone fly; that is, insect is a word with a broader meaning than stone fly:

stone fly: primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones
insect: small air-breathing arthropod

stone fly (noun)	insect (noun)
primitive winged insect with a flattened body; used as bait by fishermen; aquatic gilled larvae are carnivorous and live beneath stones	small air-breathing arthropod
	a person who has a nasty or unethical character undeserving of respect