upgrade vs better

upgrade and better both are nouns.

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

As verbs, better is a hypernym of upgrade; that is, better is a word with a broader meaning than upgrade:

Other hypernyms of upgrade include ameliorate, amend, improve, meliorate.

As verbs, better is a hypernym of upgrade; that is, better is a word with a broader meaning than upgrade:

Other hypernyms of upgrade include ameliorate, amend, improve, meliorate.

As verbs, better is a hypernym of upgrade; that is, better is a word with a broader meaning than upgrade:

Other hypernyms of upgrade include ameliorate, improve, meliorate.

upgrade (noun)	better (noun)
the act of improving something (especially machinery) by raising it to a higher grade (as by adding or replacing components)	something superior in quality or condition or effect
hardware that provides better performance than an earlier version did	the superior one of two alternatives
the property possessed by a slope or surface that rises	someone who bets
a reservation that is improved	a superior person having claim to precedence
software that provides better performance than an earlier version did
an upward slope or grade (as in a road)

upgrade (adjective)	better (adjective)
	(comparative of `good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another
	(comparative of `good') changed for the better in health or fitness
	(comparative and superlative of `well') wiser or more advantageous and hence advisable
	more than half

upgrade (verb)	better (verb)
to improve what was old or outdated	get better
give better travel conditions to	to make better
get better travel conditions	surpass in excellence
rate higher; raise in value or esteem
give a promotion to or assign to a higher position

upgrade (adverb)	better (adverb)
	comparative of `well'; in a better or more excellent manner or more advantageously or attractively or to a greater degree etc.
	from a position of superiority or authority