working vs impermanent

working is a noun but impermanent is not a noun.

Word	Noun	Adjective	Verb	Adverb
working	Yes	Yes	No	No
impermanent	No	Yes	No	No

working (noun)	impermanent (noun)
a mine or quarry that is being or has been worked

working (adjective)	impermanent (adjective)
actively engaged in paid work	not permanent; not lasting
(of e.g. a machine) performing or capable of performing	existing or enduring for a limited time only
adopted as a temporary basis for further work
adequate for practical use; especially sufficient in strength or numbers to accomplish something
serving to permit or facilitate further work or activity