In English, the shortest words are four letters long. In some other languages, we use words of only two characters. The longest words are 17-18 letters - for example, "environmentalists" and "unenthusiastically". The longest word in any language so far is in Portuguese - 'caracteristicamente'.
Typically, longer words appear in more remote locations (such as the sea - in English - and the deserts and remote areas of the world in all languages) and shorter words will be in cities and more populated areas.