What is the difference between a secured and unsecured credit card?

I want to go on a trip and rent a car and get a hotel room. I have a credit card but it is over it’s limit and I applied for a credit card and got rejected. I don’t know what a secured credit card is. Can a secured credit card be [...]

i don’t have a credit card but o have a mastercard debit card. can i get a hotel room with this?

neither my boyfriend or i have a credit card and we’re planning a trip to seattle. to stay in a hotel, i know you need a credit card. would my mastercard debit card work?