Answer:
Cash advance ⇒ To use a credit card to get money from a bank machine.
When a credit card is used to get money from a bank machine, it is called a cash advance.
Annual percentage rate ⇒ To charge interest on unpaid balances.
The annual percentage rate is the amount of interest charged on the unpaid balance of the credit card and so the longer it takes to pay off the card, the more interest will be paid.
Secured card ⇒ To build a good credit rating.
A secured card is one that is backed by cash as collateral. This cash is deposited by the user of the card and will be claimed if the user is unable to pay. In providing security via collateral, it reduces the risk of default which increases the credit rating of the user.
Balance transfer ⇒ To use one credit card to pay off money owed on a different credit card
When cash from a credit card is used to pay off the debt on another, this is called a balance transfer because the balance of one card is being reduced by the balance on another.