What’s the difference between a ... boxer and someone who has a cold?The first one (Doxa)knows his blows, and the second blows his nose.
Doxa (from ancient Greek, δοκεῖν dokein, "to appear", "to accept"), is a rhetorical term for common belief or popular opinion. Doxa include proverbs, sayings, clichés, and other expressions which are familiar but whose precise origin is unknown.