likelihood vs odds

likelihood and odds both are nouns.

Word	Noun	Adjective	Verb	Adverb
likelihood	Yes	No	No	No
odds	Yes	No	No	No

As nouns, odds is a hyponym of likelihood; that is, odds is a word with a more specific, narrower meaning than likelihood:

likelihood (noun)	odds (noun)
the probability of a specified outcome	the likelihood of a thing occurring rather than not occurring
	the ratio by which one better's wager is greater than that of another