chinch vs hemipteran

chinch and hemipteran both are nouns.

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

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

chinch: bug of temperate regions that infests especially beds and feeds on human blood
hemipteran: insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis

Other hypernyms of chinch include bug, hemipteron, hemipterous insect.

chinch (noun)	hemipteran (noun)
bug of temperate regions that infests especially beds and feeds on human blood	insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis