How to sign: the inside lower horizontal surface (as of a room or hallway)
"they needed rugs to cover the bare floors";
Similiar / Same: flooring
Categories: horizontal surface, level
Within this category: bell deck, dance floor, floorboard, parquet, truck bed
How to sign: structure consisting of a room or set of rooms comprising a single level of a multilevel building
"what level is the office on?";
Similiar / Same: storey, story, level
Categories: construction, structure
Within this category: basement, ground floor, loft, loft, mezzanine