A floor is the surface you stand or walk on inside a building. It can also mean a level of a building, like the first floor or second floor, or the main area where people work or meet.
“Floor” comes from Old English “flōr,” meaning “ground” or “floor,” likely from a Proto-Germanic word for a flat surface. It originally contrasted with the roof above.
In some countries, the “first floor” is at street level, but in others, the “first floor” is one level above ground—this can cause real confusion. The word is simple, but the numbering traditions are not.
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