crotonbug vs cockroach

crotonbug and cockroach both are nouns.

Word	Noun	Adjective	Verb	Adverb
crotonbug	Yes	No	No	No
cockroach	Yes	No	No	No

As nouns, cockroach is a hypernym of crotonbug; that is, cockroach is a word with a broader meaning than crotonbug:

crotonbug: small light-brown cockroach brought to United States from Europe; a common household pest
cockroach: any of numerous chiefly nocturnal insects; some are domestic pests

Other hypernyms of crotonbug include roach.

crotonbug (noun)	cockroach (noun)
small light-brown cockroach brought to United States from Europe; a common household pest	any of numerous chiefly nocturnal insects; some are domestic pests