smart aleck vs disparagement

smart aleck and disparagement both are nouns.

Word	Noun	Adjective	Verb	Adverb
smart aleck	Yes	No	No	No
disparagement	Yes	No	No	No

smart aleck (noun)	disparagement (noun)
an upstart who makes conceited, sardonic, insolent comments	the act of speaking contemptuously of
	a communication that belittles somebody or something