likely vs possible

likely is not a noun while possible is a noun.

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

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

likely (adjective)	possible (adjective)
has a good chance of being the case or of coming about	capable of happening or existing
within the realm of credibility	existing in possibility
expected to become or be; in prospect

likely (adverb)	possible (adverb)
with considerable certainty; without much doubt