Yes, in games you can influence the outcome (e.g., poker and blackjack). It's about calculating odds and tactics.
In gambling, it's random chance (e.g., roulette and craps). These are the pathetic slot players.
I've never done either (in a casino), just the occasional nickel / dime poker and beer night, which is really just an excuse for beer. But the idea of going to a casino for the specific idea of gaming and gambling, I don't get.
call me whatever you want, but I walk away with a $3 dollar drink.