Influencer
In short
A person who uses their authority, knowledge, or personality to change how others think or act. They often build large followings on social media to impact decisions in business, politics, or lifestyle.
In plain words
An influencer is someone people listen to online. Because people trust them, these individuals can persuade their audience to buy products or support certain ideas.
A simple example
A fitness YouTuber shares a specific protein powder they use every day. Their followers start buying that same powder because they trust the YouTuber's expertise.
Why it matters
They have become a massive force in modern marketing and communication. Businesses now spend billions to reach audiences through these trusted individuals rather than traditional adverts.
Easy to mix up
Do not confuse them with celebrities; while all celebrities have fame, not all influencers have the direct, interactive relationship with an audience that defines the role.