void vs push difference?

So I got into a debate over the weekend about void bets and push results. To me, they feel similar since neither actually wins or loses, but some folks insisted they’re different when it comes to promos or how your stake is handled. For example, in blackjack I know a push just gives you your stake back, but does a void bet always do the same, or are there situations where it plays out differently? Anyone have a numbered breakdown or real examples of how these two actually impact your account balance?