unwilling vs disposition

unwilling is not a noun while disposition is a noun.

Word	Noun	Adjective	Verb	Adverb
unwilling	No	Yes	No	No
disposition	Yes	No	No	No

unwilling (noun)	disposition (noun)
	the act or means of getting rid of something
	your usual mood
	a natural or acquired habit or characteristic tendency in a person or thing
	an attitude of mind especially one that favors one alternative over others

unwilling (adjective)	disposition (adjective)
not disposed to and refusing to do something
in spite of contrary volition