(adj) made of a very common light, strong substance that is produced by a chemical process.
plastic
(noun) money in form of notes and coins
cash
(noun) a piece of paper show how much money you owe after you eat at a restaurant.
bill
(v/n) to give money back to someone as they have paid to too much or they don't want it.
refund
(noun) the place where you pay in a supermaeket or other large shop
checkout
(adj) not spending or costing much money.
economical
(noun) something you buy that costs less than usual.
bargain
(noun) a large amount of money
fortune
(noun) a reduction in the price of something
discount
(noun) a large amount of money and other valuable things, being rich
wealth
(noun) a document that you get from someone showing that you have given them money.
receipt
(noun) a piece of equipment for adding up the amount of money someone has to pay and keeping money
till
(adj) relating to economy, business and trade.
economic
(verb) to give someone something in return for something that they gave you.
exchange