911
accident
accidental
alarm
ambulance
assistance
background
button
call
communication
concept
connection
contact
crime
danger
dangerous
emergency
equipment
female
first
green
help
hotline
line
medical
mobile
nature
number
object
office
outdoor
phone
police
red
rescue
safe
safety
screen
security
service
sign
support
symbol
talk
technology
telecommunication
telephone
warning
white
zone