bank
banking
banknote
bill
business
cash
central
cold
concept
conceptual
consumption
cost
crisis
currency
economical
economy
efficiency
electricity
energy
euro
expense
expensive
finance
financial
gas
heat
heater
heating
high
home
house
investment
low
money
pay
power
price
radiator
raise
reduce
save
saving
system
tax
temperature
thermostat
warm
waste
wealth
winter