<human>:  Why is the neighborhood I live in called Cobble Hill?
<bot>: Cobble Hill is named after the cobblestones that used to cover the street in the 19th century. Cobblestones are stones that have been rounded and polished by being hit by other rocks. Cobblestones are hard and can be used for paving streets, sidewalks, and driveways. Cobblestones are also known as broken stones, or broken rock.