balance

bank

banking

bill

business

buy

buying

card

checkout

client

close

commerce

credit

currency

customer

cyberspace

debit

debt

device

digital

electronic

finance

financial

giving

hand

horizontal

key

keyboard

keypad

machine

machinery

magnetic

money

number

pay

paying

payment

pin

purchase

retail

sale

selling

shopping

store

system

technology

terminal

transaction