better vs raise

better and raise both are nouns.

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

As verbs, raise is a hyponym of better; that is, raise is a word with a more specific, narrower meaning than better:

better (noun)	raise (noun)
something superior in quality or condition or effect	the act of raising something
the superior one of two alternatives	increasing the size of a bet (as in poker)
someone who bets	the amount a salary is increased
a superior person having claim to precedence	an upward slope or grade (as in a road)

better (adjective)	raise (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

better (verb)	raise (verb)
get better	cause to become alive again
to make better	increase the level of
surpass in excellence	raise the level or amount of something
	raise in rank or condition
	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

better (adverb)	raise (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