Synonymity is a funny thing.

A while ago, I realized that 90% of swear words originated from words that were pretty harmless.
Most of which have the same amount of letters (or close to)
For instance, shit and poop mean the same thing.
Both can be verbs, or nouns.
Both have 4 letters.
Yet one has been deemed socially unacceptable.

Unforunately, I have no explanation for this, but I really wish I did.
It bothers me that just because certain people randomly decide that certain words are “bad” means they become socially unacceptable.
I mean, I understand people have used it in ways it wasn’t intended to be used before, which adds to the whole “it’s a bad word” thing, but still.