Final answer:
Social media websites and apps enable people to create and share information in virtual communities. They have different functions and significant impacts on how we interact.
Step-by-step explanation:
Social media refers to websites and apps that allow people to create and share information and ideas in virtual communities and networks. These platforms, , enable users to communicate with each other instantly and reach a wide audience. They serve different functions - some are focused on social connections, while others are more topic-based or professional-oriented. Social media has a significant impact on how we interact with others and is a topic of study in fields like sociology and media studies.