Misnomer

A misnomer is a name that is incorrectly or unsuitably applied.[1] Misnomers often arise because something was named long before its correct nature was known, or because an earlier form of something has been replaced by a later form to which the name no longer suitably applies. A misnomer may also be simply a word that someone uses incorrectly or misleadingly.[2] The word "misnomer" does not mean "misunderstanding" or "popular misconception",[2] and a number of misnomers remain in common usage — which is to say that a word being a misnomer does not necessarily make usage of the word incorrect.