bank
banking
black
box
business
button
cash
close
code
combination
concept
deposit
dial
door
finance
financial
guard
iron
keep
lock
manual
metal
money
number
object
old
open
password
protect
protection
safe
safes
safety
savings
secret
secure
security
solid
steal
steel
storage
strong
symbol
system
treasure
trust
turn
vault
vintage
white