hemipterous insect vs insect

hemipterous insect and insect both are nouns.

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

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

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

hemipterous insect (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