Casino games, gambling, and betting all mean different things under the UK...

https://rafaelsniceop-ed.urbanvellum.com/posts/what-s-the-difference-between-a-bet-and-betting

Casino games, gambling, and betting all mean different things under the UK Gambling Act 2005. Casinos offer games like roulette where you play against the house. Gambling covers a wider range of activities involving risking money, including betting