Zehnder rhymes with:
zender, bender, blender, brender, brendor, callender, cavender, challender, contender, defender, ender, engender, fender, gender, kender, lender, offender, pender, pretender, render, schlender, sender, skender, slender, spender, splendor, stender, surrender, suspender, tender, transgender, vendor, wender, yender, zender
Zehnder sounds like:
zander, zandra, zender, zinder, zinter