A home theater system typically refers to a complete audio and video setup for a home entertainment experience, while surround sound specifically focuses on the audio aspect. A home theater system includes components like a TV or projector, audio receiver, speakers, and media players, providing an immersive audiovisual experience. On the other hand, surround sound specifically refers to the audio setup, involving multiple speakers strategically placed around the room to create a realistic sound field. Surround sound enhances the viewing experience by accurately reproducing sound effects and creating a sense of depth and directionality. In summary, a home theater system encompasses both audio and video components, while surround sound specifically focuses on the audio aspect by providing a more immersive and realistic sound experience.