possible vs impossible

possible and impossible both are nouns.

Word	Noun	Adjective	Verb	Adverb
possible	Yes	Yes	No	No
impossible	Yes	Yes	No	No

possible (noun)	impossible (noun)
something that can be done	something that cannot be done
an applicant who might be suitable

possible (adjective)	impossible (adjective)
capable of happening or existing	not capable of occurring or being accomplished or dealt with
existing in possibility	(used of persons or their behavior) not acceptable or reasonable
	totally unlikely