The term 'Night Watchman' is a job title that refers to someone who guards or watches over a certain area during the night. This job is often referred to as a GUARD or SENTRY, which are both five and six letter words respectively. The night watchman is responsible for ensuring the safety of the area they are assigned to and may be required to patrol the area or remain in one spot. They may also be required to respond to any alarms or disturbances that occur during their shift.