Burnside's rhymes with:
downsides, ironsides, mountainsides, backsides, downsides, fratricides, fungicides, genocides, glucosides, herbicides, hillsides, homicides, infanticides, insecticides, ironsides, mountainsides, oxides, pesticides, roadsides, silversides, suicides, whitesides
Burnside's sounds like:
bronchitis, broomstick, broomsticks