Is a business card the same as a debit card?

No. It's very much different.
Debit cards are those where you store money much like an ATM card so you can buy things using them. Debit card is actually the opposite of credit cards - where you purchase something and pay for it using the card, you then have to pay the issuer of the card for the amount you used.

Business cards are printed tools that you can use to promote your business. These cards contain your name, the company you're affiliated with, and contact details. They are usually given to clients or prospective clients - through mail, handed out on streets, handed out personally during meetings or product inquiry, or during events like trade shows and exhibits.

Source: http://www.digitalroom.com/business-cards-printing.html