coreid bug vs hemipteron

coreid bug and hemipteron both are nouns.

Word	Noun	Adjective	Verb	Adverb
coreid bug	Yes	No	No	No
hemipteron	Yes	No	No	No

As nouns, hemipteron is a hypernym of coreid bug; that is, hemipteron is a word with a broader meaning than coreid bug:

coreid bug: a true bug
hemipteron: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis

Other hypernyms of coreid bug include bug, hemipteran, hemipterous insect.

coreid bug (noun)	hemipteron (noun)
a true bug	insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis