superannuate vs superannuation

superannuate is not a noun while superannuation is a noun.

Word	Noun	Adjective	Verb	Adverb
superannuate	No	No	Yes	No
superannuation	Yes	No	No	No

superannuate (noun)	superannuation (noun)
	the act of discharging someone because of age (especially to cause someone to retire from service on a pension)
	the property of being out of date and not current
	a monthly payment made to someone who is retired from work

superannuate (verb)	superannuation (verb)
retire or become ineligible because of old age or infirmity
become obsolete
declare to be obsolete
retire and pension (someone) because of age or physical inability