Question

Explain why is it better to use images on hazard labels, rather than words

Answer 1

Because if there actually is an emergency you might not have time to read the entire hazard label but if theres pictures it would be easier and faster than words.

Answer 2

In the case of an emergency where you might not have enough time to read several lines of writing, not to mention trying to find the hazard warnings when the whole bottle is probably covered in writing, it is much easier to locate and read universal hazard symbols.