tricky
sticky
picky
liquid
wicked
100

a plastic card that you use to buy goods

credit card

100

a machine that allows people to take out money from their bank

cash machine / cash point / ATM

100

a printed form where you write an amount of money and who it is to be paid to

cheque

100

metal money

coin

100

real money — not virtual money

cash

200

a piece of paper money in the USA

bill

200

a piece of paper money in the UK

note

200

a reduction in the usual price of something

discount

200

an occasion when a shop sells things at less than their normal price

sale

200

the money you receive when you pay for something with more money than it costs

change

300

the amount of money available to spend on something or over a specific time period

budget

300

an arrangement to leave your money in the bank and take some out when you need it

account

300

the amount of all the money you get 

income

300

the money you get paid by the hour for the work you do

wages

300

the money you get paid every year or every month

salary

400

the money that something costs you

expense

400

a large sum of money

fortune

400

official money of different countries. Dollar, pound, rupee, yen, ruble, etc.

currency

400

a sum of money that you borrow

loan

400

good value for money, you buy something much cheaper than expected

bargain

500

the extra money that you receive if you have invested a sum of money

interest

500

the money you owe to someone

debt

500

a sum of money which is part of the full price of something, and which you pay when you agree to buy it

deposit

500

a pound / a dollar (two different slang words)

quid / buck

500

without money at the moment in the UK / in the USA (two different slang words)

skint / broke