reconsider vs reconsideration

reconsider is not a noun while reconsideration is a noun.

Word	Noun	Adjective	Verb	Adverb
reconsider	No	No	Yes	No
reconsideration	Yes	No	No	No

reconsider (noun)	reconsideration (noun)
	thinking again about a choice previously made
	a consideration of a topic (as in a meeting) with a view to changing an earlier decision

reconsider (verb)	reconsideration (verb)
consider again; give new consideration to; usually with a view to changing
consider again (a bill) that had been voted upon before, with a view to altering it