You have probably heard about the term influencer in social media marketing. However, most people do not know about a key opinion leader. While an influencer makes a living from social media and does not have educational experience in the work area, the KOLs are experts in their field of study. Although KOLs do not spend most of their time on social media, they have a significant influence in the work area. In general, KOLs have considerable control in the market than the influencers.