Propinquity

Propinquity can mean physical proximity, a kinship between people, or a similarity in nature between things.

In social psychology, propinquity (from Latin propinquitas, nearness) is one of the main factors leading to interpersonal attraction. It refers to the physical or psychological proximity between people. For example, two people living on the same floor of a building have a higher propinquity than those living on different floors. See propinquity effect.

Propinquity is also one of the factors, set out by Jeremy Bentham, used to measure the amount of pleasure in a method known as felicific calculus.