solve vs reason

solve is not a noun while reason is a noun.

Word	Noun	Adjective	Verb	Adverb
solve	No	No	Yes	No
reason	Yes	No	Yes	No

solve (noun)	reason (noun)
	the capacity for rational thought or inference or discrimination
	a fact that logically justifies some premise or conclusion
	a justification for something existing or happening
	an explanation of the cause of some phenomenon
	a rational motive for a belief or action
	the state of having good sense and sound judgment

solve (verb)	reason (verb)
find the solution to (a problem or question) or understand the meaning of	think logically
find the solution	decide by reasoning; draw or come to a conclusion
settle, as of a debt	present reasons and arguments