decease vs fail

decease is a noun but fail is not a noun.

Word	Noun	Adjective	Verb	Adverb
decease	Yes	No	Yes	No
fail	No	No	Yes	No

decease (noun)	fail (noun)
the event of dying or departure from life

decease (verb)	fail (verb)
pass from physical life and lose all bodily attributes and functions necessary to sustain life	stop operating or functioning
	deteriorate
	prove insufficient
	disappoint, prove undependable to; abandon, forsake
	become bankrupt or insolvent; fail financially and close
	be unsuccessful
	fail to get a passing grade
	fail to do something; leave something undone
	judge unacceptable
	be unable
	fall short in what is expected