There are several synonyms for "night watch" that can be used to express the concept of monitoring and guarding during the night. Some of the most common synonyms are "night shift", "night duty", "night patrol", "night security", "night guard", and "night surveillance". These expressions are often used in various contexts such as security, healthcare, transportation, and customer service, among others. Regardless of the specific industry or application, the term "night watch" conveys a sense of responsibility, alertness, and vigilance that is essential for maintaining safety and order during nighttime hours. Ultimately, choosing the most appropriate synonym depends on the particular situation and the intended message.