nouveau-riche vs parvenu

nouveau-riche and parvenu both are nouns.

Word	Noun	Adjective	Verb	Adverb
nouveau-riche	Yes	Yes	No	No
parvenu	Yes	Yes	No	No

As adjectives, nouveau-riche and parvenu are synonyms defined as:

nouveau-riche and parvenu: characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position

Other synonyms of nouveau-riche include parvenue, upstart.

As nouns, nouveau-riche and parvenu are synonyms defined as:

nouveau-riche and parvenu: a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class

Other synonyms of nouveau-riche include arriviste, upstart.

nouveau-riche (noun)	parvenu (noun)
a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class	a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class

nouveau-riche (adjective)	parvenu (adjective)
characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position	of or characteristic of a parvenu
	characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position