A corporation is organized as a system - it has this department, that department, that department. . . they don't have any meaning separately; they only can function together. And also the body is a system. Society is a system in some sense. And so on.
Things on the whole are faster in America; people don't stand for election, they run for office. If a person says he's sick, it doesn't mean regurgitating, it means ill. Mad means angry, not insane. Don't ask for the left-luggage; it's called a checkroom.