available vs disposable

available is not a noun while disposable is a noun.

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

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

available (adjective)	disposable (adjective)
obtainable or accessible and ready for use or service	designed to be disposed of after use
convenient for use or disposal	free or available for use or disposition
not busy; not otherwise committed