a, d, e, g, n, c, r, i, v, w are letters that make 'warning device'
ice, ICE, vice, warning, IC, RN, ar, ng, WA, Devi, war, vi, ic, CE, in, device, eV, VI, AR, DE, IN, Ar, Ce, In, Ni, Rn, warn are words within 'warning device'
1 possible definitions for 'warning device'
Under this definition, warning device is a noun and has the following properties:
alarm, alarm system have the same meaning as 'warning device'
'warning device' can be a type of device.
automobile horn, car horn, motor horn, burglar alarm, fire alarm, smoke alarm, horn, hooter, horn, siren are types of 'warning device'.