It's up there with the whole square/rectangle thing, too. All squares are rectangles but not all rectangles are squares. All venoms are poison but not all poisons are venom. At least folks are in the ballpark, calling a shape a shape's name and a toxin a toxin's name. I am not going to lose sleep over people using or misusing any of these terms, there are bigger fish to fry.
The Zombie Mama is here!