conk vs fail

conk is a noun but fail is not a noun.

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

conk (noun)	fail (noun)
informal term for the nose

conk (verb)	fail (verb)
pass out from weakness, physical or emotional distress due to a loss of blood supply to the brain	stop operating or functioning
pass from physical life and lose all bodily attributes and functions necessary to sustain life	deteriorate
hit, especially on the head	prove insufficient
come to a stop	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