I love words, especially words that sound interesting or are fun to say... some words you just want to say over and over again... letting them slide over your tongue like tiramisu or chocolate mousse... like the word slowly...
Propinquity is one of those words. It even has a wonderful meaning: (noun) nearness in space, time or relationship.
Origin: Latin propinquitas (nearness), from prope (near).
I don't know if I'll ever use this word in daily life or in a future novel, but it sure is fun to say.