Raw honey is honey that has been cold extracted and not pasteurized. It is not infused with any flavouring or other substances. It is straight from the hive. This preserves all its natural beneficial qualities and is real honey.
Unfortunately a lot of honey that is available commercially has been pasteurized, blended with other honeys and in some cases even mixed with other substances such as refined sugars. This removes all the natural benefits of the honey. It essentially kills it.