A social network is an online platform or service that enables people to connect with each other, communicate, and share information or content. Social networks typically allow users to create a profile, share updates, photos, videos, and other content, as well as interact with other users through comments, messages, and likes.

Examples of popular social networks include Facebook, Twitter, LinkedIn, Instagram, TikTok, and Snapchat. These platforms have become a significant part of modern communication and have revolutionized the way people connect with each other, both personally and professionally. Social networks have also enabled businesses to reach a wider audience and engage with their customers in new ways.