A contronym, often referred to as a Janus word or auto-antonym, is a word that evokes contradictory or reverse meanings depending on the context. For example, to dust Definition 1: to remove dust. Example 1: My mother asked me to dust the window shades before the party. Definition 2: to sprinkle with soil or dust. Example 2: I watched my mother dust my birthday cake in a thin layer of white sugar.

Source: Grammarly