rez

In a sentence

• Je vis au rez-de-chaussée de cet immeuble.

  I live on the ground floor of this building.

  Here, "rez" is part of the term "rez-de-chaussée," which means "ground floor" — used in the context of buildings and apartments.

• Le tableau est au rez de sa créativité.

  The painting is at the level of his creativity.

  In this sentence, "rez" is used metaphorically to indicate a level, similar to "niveau."

• Lors de l'explosion, il est tombé au rez.

  During the explosion, he fell to the ground.

  Here, "rez" denotes the ground or the base level, referring to the physical ground or floor.