gambling vs gaming

gambling and gaming both are nouns.

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

As nouns, gambling and gaming are synonyms defined as:

gambling and 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 synonyms of gambling include play.

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

gambling (adjective)	gaming (adjective)
preoccupied with the pursuit of pleasure and especially games of chance