The nearness of another to one's personal space is known as?

The term that describes the nearness of another person to one's personal space is "Proximity." This word specifically refers to the physical closeness or distance between individuals. In the context of personal space, it emphasizes how close someone is to another person, which can influence comfort levels and social interactions. Understanding proximity is essential in a nail tech or personal care environment, as it helps in maintaining a client’s comfort and respecting their boundaries while performing services.

Other terms like "Distance" and "Boundary" do relate to how space is navigated, but they do not capture the nuance of closeness as effectively. "Intimacy” refers more to emotional closeness rather than physical space, making it less applicable in this specific context of personal space.