american
bank
banking
banknote
bill
box
bucks
business
cash
closed
code
combination
concept
currency
deposit
dollar
dollars
door
earn
finance
financial
financing
greed
grey
invest
investing
investment
loan
lock
metal
monetary
money
object
open
protect
protection
rich
safe
safety
savings
secret
secure
security
steel
storage
unlocking
valuables
vault
wealth