Rouen vs. mallard

noun

  1. a city in and the capital of Seine-Maritime, in N France, on the Seine: famous cathedral; execution of Joan of Arc 1431.

  2. one of a breed of domestic ducks resembling the wild mallard.

noun

plural

mallards 
,

plural

mallard .
  1. a common, almost cosmopolitan, wild duck, Anas platyrhynchos, from which the domestic ducks are descended.