Turnover requirements, rollover requirements, wagering requirements, and playthrough requirements all mean the same thing. It indicates how much you have to spend on the bookmaker’s platform first to get your hands on the bonus money.
The wagering requirements or the turnover requirements, whatever you may want to call them are often denoted in multipliers. For example, 5x the winnings or 10x the bonus. So, if you get a $5 or equivalent bonus, you’ll have to spend $50 before the $5 is credited into your real money account.