unstable vs temporary

unstable is not a noun while temporary is a noun.

Word	Noun	Adjective	Verb	Adverb
unstable	No	Yes	No	No
temporary	Yes	Yes	No	No

unstable (noun)	temporary (noun)
	a worker (especially in an office) hired on a temporary basis

unstable (adjective)	temporary (adjective)
lacking stability or fixity or firmness	not permanent; not lasting
subject to change; variable	lacking continuity or regularity
suffering from severe mental illness
disposed to psychological variability
highly or violently reactive
affording no ease or reassurance