cash register

n.

A machine that tabulates the amount of sales transactions, makes a permanent and cumulative record of them, and has a drawer in which cash can be kept.

Also called a till.

shopping cart

n.

A handcart that holds groceries while shopping.

It is a cart supplied by a shop, especially a supermarket, for use by customers inside the shop for transport of merchandise to the check-out counter, and, after paying, often also to the car on the parking lot.

Also called a buggy or a trolley in British English; sometimes referred to as a carriage or shopping carriage in the U.S. region of New England; also known as a bascart in some regions of the U.S. and basket in others.