possible vs realistic

possible is a noun but realistic is not a noun.

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

possible (noun)	realistic (noun)
something that can be done
an applicant who might be suitable

possible (adjective)	realistic (adjective)
capable of happening or existing	aware or expressing awareness of things as they really are
existing in possibility	of or relating to the philosophical doctrine of realism
	representing what is real; not abstract or ideal