alarm
alert
annoy
attention
awake
banner
bell
bill
billboard
board
branch
call
caution
chime
clock
concept
ding
dong
guidepost
handbell
hurry
hurry up
icon
indicator
info
inform
instrument
jingle
loud
morning
notice
panel
percussion
reminder
ring
sign
signboard
signpost
sound
symbol
tick tack
time
time over
time up
two
up
vibrate
wake
wake up
watch