allowed
ban
caution
down
face
finger
forbidden
forefinger
gesture
graphic
hand
head
human
hush
icon
illustration
isolated
keep
label
librarian
library
mouth
mute
no
noise
noiseless
not
off
outline
people
person
profile
prohibited
quiet
restriction
rule
show
shut
silence
silent
silhouette
sound
soundless
speak
symbol
up
warning
whisper