Difference between Pretentious and Upstart

PRETENTIOUS vs UPSTART: NOUN

A person of humble origin who attains sudden wealth, power, or importance, especially one made immodest or presumptuous by the change; a parvenu.
A gymnastic exercise performed starting from a position with the legs over the upper body and moving to an errect position by arching the back and swinging the legs out and down while forcing the chest upright
An arrogant or presumptuous person
A person who has suddenly risen to a higher economic status but has not gained social acceptance of others in that class
One who or that which starts or springs up suddenly; specifically, a person who suddenly rises from a humble position to wealth, power, or consequence; a parvenu.
One who assumes a lofty or arrogant tone.
A puddle made by the hoofs of horses in clayey ground. Halliwell. The meadow-saffron, Colchicum autumnale, whose flowers spring up suddenly without leaves.
One who has risen suddenly, as from low life to wealth, power, or honor; a parvenu.
The meadow saffron.
One who has suddenly gained wealth, power, or other prominence, but either has not received social acceptance or has become arrogant or presumptuous.

Intended to attract notice and impress others
Of a display that is tawdry or vulgar
Claiming that or behaving as if one is important or deserving of merit when such is not the case.
Showing or betraying an attitude of superiority.
Marked by an extravagant or presumptuous outward show; ostentatious: : showy.
Full of pretension; disposed to lay claim to more than is one's; presuming; assuming.
Marked by an unwarranted claim to importance or distinction.
Ostentatious; intended to impress others.
(of a display) tawdry or vulgar
Making claim to or creating an appearance of (often undeserved) importance or distinction

Self-important; presumptuous.
Self-important and presumptuous
Characteristic of someone who has risen economically or socially but lacks the social skills appropriate for this new position
Suddenly raised to a position of consequence.

Pretended; unfounded; false.
Full of pretension, or claims to greater excellence or importance than the truth warrants; attempting to pass for more than the actual worth or importance; making an exaggerated outward show.

Characteristic of a parvenu; new and pretentious.
Suddenly raised to prominence or consequence; parvenu: as, “a race of upstart creatures,”
Starting up suddenly; quickly rising.
To start or spring up suddenly.

Sesquipedalian, Highfaluting, Tasteless, Parvenu, Portentous, Grandiose, Ostentatious, Kitsch, Sententious, Showy, Hifalutin, Grandiloquent, Highfalutin, Arty, Pompous

Archrival, Startup, Brash, Arriviste, Interloper, Underdog, Neophyte, Wunderkind, Newcomer, Powerhouse, Rival, Parvenue, Nouveau riche, Pretentious, Parvenu

Sesquipedalian, Highfaluting, Tasteless, Parvenu, Portentous, Grandiose, Ostentatious, Kitsch, Sententious, Showy, Hifalutin, Grandiloquent, Highfalutin, Arty, Pompous

Competitor, Hotshot, Archrival, Startup, Brash, Arriviste, Underdog, Neophyte, Newcomer, Powerhouse, Rival, Parvenue, Nouveau riche, Pretentious, Parvenu

Hipster paradise and a bit pretentious, overall okay.
Help me stamp out boring, pretentious artist statements!
Characterized by a pretentious, boastful, exaggerated style, bombastic.
Get detailed meaning of pretentious in Hindi language.
I gotta go stop being a pretentious fuck.
Overstated language is wordy, vague, and often pretentious.
Many readers find this diction unnatural or pretentious.
What a silly little emotional and pretentious rant.
Yet every moment feels either pretentious or poky.
Caught between a pretentious, sniffy, student scene, and a pretentious, sniffy and snidey fan scene, even being myself took practice.

But Apple is facing tough competition from upstart Xiaomi.
He took away the power of many upstart nobles.
See how low your Upstart rate can be.
Find out how low your Upstart rate is.
New Crown Prince: Young Reformer or Inexperienced Upstart?
Upstart systems: only run startup scripts at boot.
Robert Breer, interview by Jim Trainor, Upstart, no.
Upstart Personal Loans Review: Are They Worth It?
Chancelor Bennett from underground Chicago upstart to slightly less underground Chicago upstart.
Trustpilot and hurry to Upstart dot com slash morbid to find out HOW LOW your Upstart rate can be.