kissing bug vs reduviid

kissing bug and reduviid both are nouns.

Word	Noun	Adjective	Verb	Adverb
kissing bug	Yes	No	No	No
reduviid	Yes	No	No	No

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

kissing bug: large bloodsucking bug
reduviid: a true bug: long-legged predacious bug living mostly on other insects; a few suck blood of mammals

Other hypernyms of kissing bug include assassin bug.

kissing bug (noun)	reduviid (noun)
large bloodsucking bug	a true bug: long-legged predacious bug living mostly on other insects; a few suck blood of mammals