What Difference between smoking salvia and smoking salvia leaf?

Salvia is either smoked as just dried leaves which doesnt have too much effect or smoking extract that has been applied to dried leaves which gets higher in potency. I would say anyone who says 'smoking salvia' is just using a term basically for the action of doing so.
Anyone who is going to try Salvia should first read more information and gain knowledge,especially before buying salvia. There is a really great article here for beginners: http://hubpages.com/hub/buyfreshsalviadivinorum