11.Traditionally a bank is a business organization which keeps money for customers and pays it out on demand or lends them money, and a building society is more usually associated with saving money or lending people money to buy houses.
12.A discount is the percentage by which a full price is reduced to a buyer by the seller. A refund is money paid back when, for example, returning something to a shop.
13.A bargain is something bought more cheaply than usual. Something which is overpriced is too expensive. Something which is exorbitant costs much more than its true value.
14.A worthless object is something which has no value. A priceless object is an extremely valuable object.
15.If you save money, you put it to one side so that you can use it later. If you invest money, you put it into property, shares, etc…so that it will increase in value.
16.Inflation is a state of economy where prices and wages increase. Deflation is a reduction of economic activity.
17.Income is the money you receive. Expenditure is the money you spend.
18.If you lend money, you let someone use your money for a certain period of time. If you borrow money from someone, you take money for a time, usually paying interest.