Difference between Explotion proof standard and Protection Standard( IP, NEMAX)

Dear all.
Every one can explain for me, difference between Explosion proof protection and Protection standards( IP, NEMAX). You can send to me some manuals about they.
Thank you!

Well ....

Protection standards like IP are generally about how well something copes when things (dust, water) try to get in, usually quite slowly.

Explosion proof standards are generally about how well something copes when things (flames, loud noises, hot gases) try to get out, usually very quickly.

Ken

Thank Ken.
You can help me, send to me some documents about they.
Thank you!

This is a publication published by NEMA.

Technically the term is "hazardous location" not "explosion proof".