upgrade vs raise

upgrade and raise both are nouns.

Word	Noun	Adjective	Verb	Adverb
upgrade	Yes	No	Yes	No
raise	Yes	No	Yes	No

As nouns, upgrade and raise are synonyms defined as:

Other synonyms of upgrade include acclivity, ascent, climb, rise.

As verbs, upgrade and raise are synonyms defined as:

Other synonyms of upgrade include advance, elevate, kick upstairs, promote.

upgrade (noun)	raise (noun)
the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)	the act of raising something
hardware that provides better performance than an earlier version did	increasing the size of a bet (as in poker)
the property possessed by a slope or surface that rises	the amount a salary is increased
a reservation that is improved	an upward slope or grade (as in a road)
software that provides better performance than an earlier version did
an upward slope or grade (as in a road)

upgrade (verb)	raise (verb)
to improve what was old or outdated	cause to become alive again
give better travel conditions to	increase the level of
get better travel conditions	raise the level or amount of something
rate higher; raise in value or esteem	raise in rank or condition
give a promotion to or assign to a higher position	invigorate or heighten
	put an end to
	bring (a surface or a design) into relief and cause to project
	multiply (a number) by itself a specified number of times: 8 is 2 raised to the power 3
	cause to be heard or known; express or utter
	put forward for consideration or discussion
	activate or stir up
	establish radio communications with
	pronounce (vowels) by bringing the tongue closer to the roof of the mouth
	cause to assemble or enlist in military
	bet more than the previous player
	bid (one's partner's suit) at a higher level
	summon into action or bring into existence, often as if by magic
	construct, build, or erect
	cultivate by growing, often involving improvements by means of agricultural techniques
	create a disturbance, especially by making a great noise
	call forth (emotions, feelings, and responses)
	raise from a lower to a higher position
	cause to puff up with a leaven
	move upwards
	collect funds for a specific purpose
	look after a child until it is an adult
	give a promotion to or assign to a higher position
	register formally as a participant or member