Criterion
When people want to name a college or university, they often think of the word “Harvard”. It is certainly true that Harvard University is an old and respected school. But is it the “best” college? At that point, some might answer “Depends what you mean by ‘best’. Least expensive? Most expensive? Highest number of satisfied students?
When trying to decide what sort of best we are interested in, we are dealing with the question of criterion. What variable are we looking at? When evaluating anything as complex as a university, there are many, many possible criteria. If we settle on a variable, just one, that is the criterion we are using. These words come from Greek.
Sometimes, I think maybe Americans are very interested in being “Number One” without thinking “Number one in what?” Number one in auto crashes? Number one in sleep disorders?