Oxides rhymes with:
backsides, backsides, burnside's, downsides, fratricides, fungicides, genocides, glucosides, herbicides, hillsides, homicides, infanticides, insecticides, ironsides, mountainsides, pesticides, roadsides, silversides, suicides, whitesides
Oxides sounds like:
okey-dokey, oshatz, ouagadougou, ouzts, oxidize