noun

le étage

floor

C'est un niveau d'un bâtiment où l'on peut marcher et où il y a souvent des pièces.

The word étage has several meanings in French, primarily related to spatial positioning or hierarchy:

A floor or story of a building: This refers to the level of a structure located above the ground floor (rez-de-chaussée). For example, "Il habite au troisième étage" means "He lives on the third floor."
A level, tier, or stage: This refers to a horizontal arrangement or a layer of something. It can be used for objects (like a cake or a shelf) or abstract concepts (like a level of intensity or a hierarchy).
In geology/biology: It can refer to a stratum, a geological layer, or a biological zone (such as an altitudinal vegetation zone).

Grammar: It is a masculine noun.
Word origin: It comes from the Old French estage (dwelling, place, or stage), which originates from the Vulgar Latin staticum (place of standing), derived from the Latin stare (to stand).