sharer vs share

sharer and share both are nouns.

Word	Noun	Adjective	Verb	Adverb
sharer	Yes	No	No	No
share	Yes	No	Yes	No

sharer (noun)	share (noun)
someone who has or gives or receives a part or a share	the allotment of some amount by dividing something
	the effort contributed by a person in bringing about a result
	a sharp steel wedge that cuts loose the top layer of soil
	assets belonging to or due to or contributed by an individual person or group
	any of the equal portions into which the capital stock of a corporation is divided and ownership of which is evidenced by a stock certificate

sharer (verb)	share (verb)
	communicate
	give out as one's portion or share
	have, give, or receive a share of
	use jointly or in common
	have in common