temporary vs unstable

temporary is a noun but unstable is not a noun.

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

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

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