banknote
bill
budget
cash
central
charge
cold
cost
crisis
currency
debt
economy
efficiency
efficient
energy
environment
euro
europe
expense
expensive
family
gas
hand
heat
heater
heating
home
house
household
increase
man
money
pay
paying
price
radiator
raise
room
save
savings
system
take
tax
technology
temperature
thermostat
wallet
winter