Proposition: when multiple words to describe the same phenomenon bubble up in a language, it indicates that the speakers of that language have an unusual degree of interest in that phenomenon. I suppose this is a variation on Sapir-Whorf. Bite me.
What does it say about us that we have this degree of interest in hidden meanings? Unlike, say, the Victorians or the Elizabethans?
Bonus question: what's the difference between a 'whistleblower' and a 'snitch'?