"Wheel" is a unique word in that regard. However, there are some words that sound very similar to "wheel", but are spelled differently:
* Wheal: A raised, red mark on the skin caused by an insect bite or allergic reaction.
* Whelk: A type of sea snail.
It's important to note that these words are homophones, not homonyms. Homophones sound the same but are spelled differently.