Other things that were used before toilet paper include: Hay, corncobs, sticks, stones, sand, moss, hemp, wool, husks, fruit peels, ferns, sponges, seashells, and broken pottery. 15. 70-75% of the world still doesnât use toilet paper because it is too expensive or there is not sufficient plumbing.
Propensity is defined as a natural tendency. An example of propensity is an inborn love for writing. pl. -Â·ties. 1  a natural inclination or tendency; bent.  Obs. favorable inclination; bias (for)
They're essentially synonymous: Proclivity is 'leaning to', propensity is 'nearness to' and predilection is 'preference for'. Worry about something more significant like the misuse of the words irony and disinterest or the mispronunciation of the the words route and forte.