alarm
alert
atmosphere
attention
background
beware
body
careful
caution
celsius
climate
danger
dangerous
degree
design
equipment
extreme
fahrenheit
fire
gas
hazard
heat
high
hot
icon
illustration
indicator
isolated
label
measurement
medical
meteorology
pictogram
protection
risk
safety
scale
security
sign
sun
surface
symbol
temperature
thermometer
triangle
warm
warning
weather
yellow