Whitesides rhymes with:
backsides, burnside's, downsides, fratricides, fungicides, genocides, glucosides, herbicides, hillsides, homicides, infanticides, insecticides, ironsides, mountainsides, oxides, pesticides, roadsides, silversides, suicides
Whitesides sounds like:
watchdog, watchdogs, wedgewood's, widgets, woitschatzke, woodsheds, woodstock