Acorn rhymes with:
capricorn, eichorn, bralorne, capricorn, colborn, colborne, deerborne, eichorn, hagadorn, halliciforn, hathorn, hawthorne, heckendorn, kempthorne, langhorn, langhorne, leghorn, newborn, silverthorn, silverthorne, sonneborn
Acorn sounds like:
achorn, acierno, ackerman, ackermann, acrimony, acronym, agouron, agrarian, akerman, akkerman, akron, aquarium, askren, assyrian, aukerman, ausherman