sessions
"Sessions" is the plural form of "session" — a word you will encounter very often in everyday life, education, work, and technology. It has a few closely related meanings, all built around the same core idea: a period of time set aside for a specific activity or purpose.
When people talk about seeing a therapist, psychologist, or counsellor, they often call each appointment a session. It is a neutral, professional way to refer to that time.
psychology, healthcare · Modern, widely used
In technology, a session is the period of time when you are actively connected to a website, app, or computer system — from the moment you log in to the moment you log out. When a website says 'your session has expired', it means too much time passed without activity and your connection was closed.
technology, computing · Modern, widely used