We have the ancient Greeks to thank for euphemism; to “eupheme” was to speak well of — or use words of good omen. On one hand, euphemisms are simply polite words that allow us to talk about things others may find offensive. But on the other, euphemisms can be used not just to soften the rough edges of life, but to conceal truth.
Societies have developed a plethora of words and expressions to deal with taboo subjects: either to avoid mentioning them at all, or to smooth the rough edges of reality. Religion was one of the first English taboos, but it certainly wasn’t the last. Take the subject of death – we’re very reluctant to use this powerful taboo word.