noun / verb
tile
TYLE/taɪl/
A flat piece used to cover a surface, or to cover a surface with such pieces.
The thin tile rests against a small area of matching floor tiles.

Etymology
Latin tegula named a roof tile and was derived from tegere, “to cover.” The name thus emphasizes its covering function, which also fits tiles used on floors and walls.
In context
Lay it flat on the tile and pull it slowly across the surface at a diagonal to the joints. Flip it over and repeat. Rinse out the sponge again and continue until the floor is done.