credible vs likely

credible and likely both are adjectives.

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

credible (adjective)	likely (adjective)
capable of being believed	has a good chance of being the case or of coming about
appearing to merit belief or acceptance	within the realm of credibility
(a common but incorrect usage where `credulous' would be appropriate) credulous	expected to become or be; in prospect

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