Casino games like roulette let you play against the house with set rules and...

https://rulelogics.com/casino-gambling-or-betting-whats-the-difference-between-these-terms/

Casino games like roulette let you play against the house with set rules and odds. Gambling is a broader term covering all betting activities involving money at risk. Betting usually means placing a stake on an uncertain event, such as football wagers