What is Salafism?

I was wondering what Salafism was? and if there is any distinctions between Islam and salafism?

Thread closed, post in the right sections please!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

(The number of exclamation marks denotes my fustration)