A social network is a platform that allows individuals to connect, communicate, and share content with others. These networks can be online or offline and often involve relationships between people, groups, or organizations. Popular examples of online social networks include Facebook, Twitter, and Instagram, where users can post updates, share photos, and interact with friends or followers. Social networks facilitate the exchange of information and ideas, making it easier for users to stay informed about various topics. They can also serve as tools for businesses to engage with customers and promote their products. Overall, social networks play a significant role in modern communication and community building.