firebug vs criminal

firebug and criminal both are nouns.

Word	Noun	Adjective	Verb	Adverb
firebug	Yes	No	No	No
criminal	Yes	Yes	No	No

As nouns, criminal is a hypernym of firebug; that is, criminal is a word with a broader meaning than firebug:

firebug: a criminal who illegally sets fire to property
criminal: someone who has committed a crime or has been legally convicted of a crime

Other hypernyms of firebug include crook, felon, malefactor, outlaw.

firebug (noun)	criminal (noun)
a true bug: brightly colored bug that can exude a stain	someone who has committed a crime or has been legally convicted of a crime
a criminal who illegally sets fire to property

firebug (adjective)	criminal (adjective)
	guilty of crime or serious offense
	involving or being or having the nature of a crime
	bringing or deserving severe rebuke or censure