raise vs overcome

raise is a noun but overcome is not a noun.

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

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

raise (noun)	overcome (noun)
the act of raising something
increasing the size of a bet (as in poker)
the amount a salary is increased
an upward slope or grade (as in a road)

raise (verb)	overcome (verb)
cause to become alive again	get on top of; deal with successfully
increase the level of	overcome, usually through no fault or weakness of the person that is overcome
raise the level or amount of something	win a victory over
raise in rank or condition	overcome, as with emotions or perceptual stimuli
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