hemipteran vs insect

hemipteran and insect both are nouns.

Word	Noun	Adjective	Verb	Adverb
hemipteran	Yes	No	No	No
insect	Yes	No	No	No

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

hemipteran: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
insect: small air-breathing arthropod

hemipteran (noun)	insect (noun)
insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis	small air-breathing arthropod
	a person who has a nasty or unethical character undeserving of respect