wager vs gaming

wager and gaming both are nouns.

Word	Noun	Adjective	Verb	Adverb
wager	Yes	No	Yes	No
gaming	Yes	No	No	No

As nouns, gaming is a hypernym of wager; that is, gaming is a word with a broader meaning than wager:

wager: the act of gambling
gaming: the act of playing for stakes in the hope of winning (including the payment of a price for a chance to win a prize)

Other hypernyms of wager include gambling, play.

wager (noun)	gaming (noun)
the act of gambling	the act of playing for stakes in the hope of winning (including the payment of a price for a chance to win a prize)
the money risked on a gamble

wager (verb)	gaming (verb)
maintain with or as if with a bet
stake on the outcome of an issue