parvenu vs upstart

parvenu and upstart both are nouns.

Word	Noun	Adjective	Verb	Adverb
parvenu	Yes	Yes	No	No
upstart	Yes	Yes	No	No

As adjectives, parvenu and upstart are synonyms defined as:

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

Other synonyms of parvenu include nouveau-riche, parvenue.

As nouns, parvenu and upstart are synonyms defined as:

parvenu and upstart: 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 parvenu include arriviste, nouveau-riche.

parvenu (noun)	upstart (noun)
a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class	a gymnastic exercise performed starting from a position with the legs over the upper body and moving to an erect position by arching the back and swinging the legs out and down while forcing the chest upright
	a person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class
	an arrogant or presumptuous person

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