"Beside" is a preposition that means "at the side of" or "next to." It indicates a spatial relationship where one thing is located to the side of another. Here are a few examples of how "beside" can be used:
1. Spatial relationship: "She sat beside her mother on the bench."
2. Nearby but not touching: "The cat sleeps beside the window."
3. In addition to: "I have a brother beside me in the family."
Remember that "beside" is different from "besides," which means "in addition to" or "other than." For example, "Besides my brother, I have two sisters."