disposition vs unwilling

disposition is a noun but unwilling is not a noun.

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

disposition (noun)	unwilling (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

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