Misnomer

A misnomer is an incorrect or misleading name for a thing. They are often idiomatic. Examples:\n* the "morning sickness" associated with the onset of pregnancy is a misnomer; illness can occur at any time, and its "morning" association is anecdotal.\n* comic books, are illustrated stories, not necessarily comedies.\n* dry cleaning often uses fluid, making clothes wet\n* the "lead" in a pencil is made of graphite and clay Compare with: malapropism