plagiarizer vs disparagement

plagiarizer and disparagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
plagiarizer	Yes	No	No	No
disparagement	Yes	No	No	No

plagiarizer (noun)	disparagement (noun)
someone who uses another person's words or ideas as if they were his own	the act of speaking contemptuously of
	a communication that belittles somebody or something