Here You could find all types of Homonyms to clarify your doubt.
Quarts: Several units of liquid capacity equal to quarter of a gallon or two pints, equivalent to approximately, in Britain, 1.13 litres and in the USA to approximately 0.94 litres
Quartz: A hard mineral consisting of silica, typically occurring as colorless or white hexagonal prisms
Queue: A line or sequence of people or vehicles awaiting their turn to be attended to or to proceed
Cue: A signal or prompt for action