one says "brown cow" and "the cow is brown" one does not see "brown cow" as equivalent to "cow brown" that's literally creole grammar.

I’m not sure on the miles thing… But this is the rule for metres. “A "square metre" is not the same thing as a "metre square" - although it is true that exactly 1 square metre is exactly 1 meter square. But that only works for the numbers 1 and 0; no others. For example, a square that is 2...