willing vs disposed

willing is a noun but disposed is not a noun.

Word	Noun	Adjective	Verb	Adverb
willing	Yes	Yes	No	No
disposed	No	Yes	No	No

willing (noun)	disposed (noun)
the act of making a choice

willing (adjective)	disposed (adjective)
disposed or inclined toward	(usually followed by `to') naturally disposed toward
not brought about by coercion or force	having made preparations