Carbons rhymes with:
fluorocarbons, hydrocarbons, fluorocarbons, hydrocarbons, fluorocarbons, hydrocarbons, bourbons, cabins, cubans, fitzgibbons, fluorocarbons, gibbens, grabens, hertzenleben's, hydrocarbons, mccubbins, ribbons, robin's, robins, robins', rubens, suburbans, toobin's, turbans, urban's
Carbons sounds like:
caravans, carbonize, carpencic, carpencic's, carping, carving, carvings, cervenka, cherrapunji, chervenak, chirping, chriboniko, chriboniko's, corpening, craven's, cravens, craving, cravings, creepiness, creeping, cribbing, cropping, curbing, curving