stakes vs jackpot

stakes and jackpot both are nouns.

Word	Noun	Adjective	Verb	Adverb
stakes	Yes	No	No	No
jackpot	Yes	No	No	No

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

Other hyponyms of stakes include kitty, pot, ante, kitty, pool.

stakes (noun)	jackpot (noun)
the money risked on a gamble	the cumulative amount involved in a game (such as poker)
	any outstanding award