Yeah, I know the differences between speed and velocity. In common life, however, I may use them as if they were the same. Guess my science-brain isn't that much active sometimes. While this thread is physicist-targeted, anyone's reaction is welcome. You know the difference between those two words, right? How do you feel when common people use them as if they meant the same? Have you ever objected at their actions, or you just sigh again, as if no effort could stop the misuse?