Piso vs. suelo in Mexico
I know spain uses suelo for floor, but what does mexico use for floor piso or suelo? In Mexico is it better to say estoy limpiando el piso or suelo?
3 Answers

In southern México I heard both piso and suelo used for a kitchen floor. In Spain, I believe that they also use piso to mean "apartment/flat."
But, as Kevin so eloquently said, I have only seen signs in the U.S. that say "piso mojado."
You could use SUELO when you speak about open spaces like a garden, patios the freeway. SUELO.- Ground,soil, surface. You could use PISO when you speak about a close space like a room, a house, an office. PISO.- floor.