I watch English football, and the commentators always say, "he fell to the floor," when a player falls to the turf.
I first thought it was a simple misspeak, but they always say it.
This is outside, on grass, and they don't say "ground," or "turf," or "playing surface," it's "floor."
If you go into a multistory building in the UK the first floor is the "ground floor" and the second floor is the "first floor".
You can end up getting very lost over there.