cortext
noun
A distinct realm or sphere in which a person operates, involving its own set of people to interact with and its own set of expectations of how the person will behave.
Nicolas was known to his coworkers as productive, professional, and a bit of a hardass. His girlfriend knew him as sweet, relaxed, and a bit goofy. Now that things were getting more serious between them, she wanted to meet his coworkers. Nick was deeply concerned about mixing these two cortexts, and knew he’d have no idea how to act with both in one room.