disparagement vs arriviste

disparagement and arriviste both are nouns.

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

disparagement (noun)	arriviste (noun)
the act of speaking contemptuously of	a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class
a communication that belittles somebody or something