Surveillance vs. Vigilance — What's the Difference?

Surveillance is the monitoring of behavior, many activities, or information for the purpose of information gathering, influencing, managing or directing. This can include observation from a distance by means of electronic equipment, such as closed-circuit television (CCTV), or interception of electronically transmitted information like Internet traffic.

The action or state of keeping careful watch for possible danger or difficulties

Close observation of a person or group, especially one under suspicion.

Alert watchfulness.

The act of observing or the condition of being observed.

Alert watchfulness.

Close observation of an individual or group; person or persons under suspicion.

Close and continuous attention.

Continuous monitoring of disease occurrence for example.

(obsolete) A guard; a person set to watch.

Systematic observation of places and people by visual, aural, electronic, photographic or other means.

The quality or state of being vigilant; forbearance of sleep; wakefulness.

(legal) In criminal law, an investigation process by which police gather evidence about crimes, or suspected crime, through continued observation of persons or places.

Watchfulness in respect of danger; care; caution; circumspection.

Oversight; watch; inspection; supervision.

Guard; watch.

Close observation of a person or group (usually by the police)

The process of paying close and continuous attention

Vigilant attentiveness;