useable vs disposable

useable is not a noun while disposable is a noun.

Word	Noun	Adjective	Verb	Adverb
useable	No	Yes	No	No
disposable	Yes	Yes	No	No

useable (noun)	disposable (noun)
	an item that can be disposed of after it has been used

useable (adjective)	disposable (adjective)
convenient for use or disposal	designed to be disposed of after use
fit or ready for use or service	free or available for use or disposition
capable of being put to use