bank
black
box
button
cash
closed
code
deposit
depository
dial
display
door
editable
element
finance
hotel
illustration
insurance
isolated
key
layered
lcd
lock
metal
money
motel
number
object
outline
password
profile
protect
protection
safe
safeguard
safety
save
secrecy
secret
secure
security
silhouette
solid
steel
still
strength
strongbox
treasure