How are protons & electrons different?

Proton: a stable subatomic particle occurring in all atomic nuclei, with a positive electric charge equal in magnitude to that of an electron, but of opposite sign.
Electron: a stable subatomic particle with a charge of negative electricity, found in all atoms and acting as the primary carrier of electricity in solids.

Protons have positive charges.
Electrons have negative charges. 

I hope this helps! :)

Ido not understand.