Different types of promotions or bonuses that players can receive.
A Free Bet is a bonus for sports betting, where you can place a free bet, a bet without using your own money, and any winnings are usually credited as withdrawable cash.
On the other hand, a Free Spin is a casino bonus for slot games, allowing you to spin the reels without wagering real money, and any winnings are usually subject to wagering requirements before they can be withdrawn.
The winnings received do not include the amount that was betted.