likely vs probable

likely is not a noun while probable is a noun.

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

likely (noun)	probable (noun)
	an applicant likely to be chosen

likely (adjective)	probable (adjective)
has a good chance of being the case or of coming about	likely but not certain to be or become true or real
within the realm of credibility	apparently destined
expected to become or be; in prospect

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