caractéristique

In a sentence

• Cette plante a une caractéristique unique : elle brille sous la lumière ultraviolette.

  This plant has a unique characteristic: it glows under ultraviolet light.

  In this sentence, "caractéristique" is used as a noun referring to a distinctive attribute or feature of the plant, its ability to glow.

• Il est caractéristique de ce groupe de travailler en équipe constamment.

  It is characteristic of this group to work in teams constantly.

  Here, "caractéristique" functions as an adjective describing a typical trait or behavior of the group: teamwork.

• La douceur est une caractéristique de sa personnalité qui la rend très appréciée.

  Gentleness is a characteristic of her personality that makes her very appreciated.

  In this example, "caractéristique" acts as a noun denoting a defining quality or feature of her personality: gentleness.