enlightenment vs enlighten

enlightenment is a noun but enlighten is not a noun.

Word	Noun	Adjective	Verb	Adverb
enlightenment	Yes	No	No	No
enlighten	No	No	Yes	No

enlightenment (noun)	enlighten (noun)
education that results in understanding and the spread of knowledge
(Hinduism and Buddhism) the beatitude that transcends the cycle of reincarnation; characterized by the extinction of desire and suffering and individual consciousness

enlightenment (verb)	enlighten (verb)
	make free from confusion or ambiguity; make clear
	make understand
	give spiritual insight to; in religion