1. The propinquity of the house to the local school was one of the main factors in our decision to buy the house, as the children were at that time of school-going age.
2. First cousins are not permitted to marry because their propinquity makes it genetically risky.
propinquus (near, neighboring) (Latin)
Propinquity has PIN in it. If you pin two things together they are close together since the alphabets P & Q are in close proximity to each other, they are in propinquity.