order Hemiptera vs bug

order Hemiptera and bug both are nouns.

Word	Noun	Adjective	Verb	Adverb
order Hemiptera	Yes	No	No	No
bug	Yes	No	Yes	No

order Hemiptera (noun)	bug (noun)
plant bugs, bedbugs, some true bugs; also includes suborders Heteroptera (true bugs) and Homoptera (e.g., aphids, plant lice and cicadas)	insects with sucking mouthparts and forewings thickened and leathery at the base; usually show incomplete metamorphosis
	general term for any insect or similar creeping or crawling invertebrate
	a minute life form (especially a disease-causing bacterium); the term is not in technical use
	a small hidden microphone; for listening secretly
	a fault or defect in a computer program, system, or machine

order Hemiptera (verb)	bug (verb)
	annoy persistently
	tap a telephone or telegraph wire to get information