Sounds right
Homophones are words that are spelled differently but actually sound alike. Some examples are carrot and caret, bawl and ball, and add and ad. There is a long list of these similar-sounding pairs and it is actually an interesting study. Those with time can make investments in coming up with jokes about this.
One funny, or perhaps frustrating, experience, however, is having to see the word “patients” instead of “patience”. We can only assume that the person wanted the latter, but he got the former instead. This is a complete disaster because he would need to have it covered up. Or he could just tell the story about the mix-up and give those who ask a lesson on homophones.