Main entry: spectator, looker, witness, watcher, viewer
Definition: a close observer; someone who looks at something (such as an exhibition of some kind)
Usage: the spectators applauded the performance; television viewers; sky watchers discovered a new star
Main entry: watcher
Definition: a person who keeps a devotional vigil by a sick bed or by a dead body
Main entry: watcher, watchman, security guard
Definition: a guard who keeps watch