A long seat for multiple people, typically made of wood or metal, often found in public places like parks or sports fields. We sat on the bench in the park and watched the children play.
A judge's seat in a courtroom, or the office or position of a judge. The lawyer presented his case to the bench with confidence.
A worktable, especially in a workshop or laboratory, used for manual or technical work. The technician repaired the device on the bench in the lab.
A reserve of players in a sports team who are not playing but are available to substitute. The coach decided to bring a player off the bench to strengthen the defense.