reason vs reasoner

reason and reasoner both are nouns.

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

reason (noun)	reasoner (noun)
the capacity for rational thought or inference or discrimination	someone who reasons logically
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

reason (verb)	reasoner (verb)
think logically
decide by reasoning; draw or come to a conclusion
present reasons and arguments