criminal law vs complaint

criminal law and complaint both are nouns.

Word	Noun	Adjective	Verb	Adverb
criminal law	Yes	No	No	No
complaint	Yes	No	No	No

criminal law (noun)	complaint (noun)
the body of law dealing with crimes and their punishment	an expression of grievance or resentment
	(formerly) a loud cry (or repeated cries) of pain or rage or sorrow
	(civil law) the first pleading of the plaintiff setting out the facts on which the claim for relief is based
	(criminal law) a pleading describing some wrong or offense
	an often persistent bodily disorder or disease; a cause for complaining