unravel vs ladder

unravel is not a noun while ladder is a noun.

Word	Noun	Adjective	Verb	Adverb
unravel	No	No	Yes	No
ladder	Yes	No	Yes	No

unravel (noun)	ladder (noun)
	steps consisting of two parallel members connected by rungs; for climbing up or down
	a row of unravelled stitches
	ascending stages by which somebody or something can progress

unravel (verb)	ladder (verb)
become undone	come unraveled or undone as if by snagging
become or cause to become undone by separating the fibers or threads of
disentangle