In the US, if you use a debit card, it gives you the option of using "debit" or "credit". But that's not entirely true. the choice just determines how you verify: debit to verify with a PIN, credit to verify with a signature. Both come out of your bank account.
It is (or it was - and should still be) be possible to have two accounts on the same card - a debit and a credit (a proper credit account that does NOT have anything to do with your debit account).
In Australia the difference is "Visa debit" versus "Visa" - I think most credit cards that take money out of your debit account have "debit" after the Visa/Mastercard logo on the card.