unresponsive vs refractory

unresponsive is not a noun while refractory is a noun.

Word	Noun	Adjective	Verb	Adverb
unresponsive	No	Yes	No	No
refractory	Yes	Yes	No	No

unresponsive (noun)	refractory (noun)
	lining consisting of material with a high melting point; used to line the inside walls of a furnace

unresponsive (adjective)	refractory (adjective)
not responding to some influence or stimulus	stubbornly resistant to authority or control
aloof or indifferent	temporarily unresponsive or not fully responsive to a process or stimulus
not susceptible to suggestion or influence	not responding to treatment