monitor
The verb form carries a sense of vigilant, continuous oversight. It differs from simple watching by implying a systematic process of tracking data or behavior to ensure stability or detect anomalies. It is frequently used in medical, technical, and managerial contexts where precision and alertness are required. As a noun, the word spans from physical hardware to human roles. While the electronic screen is the most common modern usage, the term for a supervisor (such as a school monitor) retains a traditional sense of guardianship and rule enforcement.
Meanings
To observe and check the progress or quality of something over a period of time to see if it is developing correctly.
"The doctors will monitor the patient's heart rate throughout the night."
To watch or listen to something using a technical device in order to detect specific activity or changes.
"The security team monitors the network for any signs of unauthorized access."
A device that displays information from a computer or other electronic device, typically a screen.
"He bought a new high-resolution monitor for his home office."