Only in that they both end with "oz" and sound nothing alike, don't share any common meaning, and have no other obvious connection. Personally, I don't see how anybody could ever confuse those two words.
Right, because everybody has perfect memory of everything they've heard in the past. No wait, it's actually quite the opposite. People have crappy memory, especially for things they're not already familiar with. Neither word has any meaning to an English speaker, but they sounds very similar. I can easily imagine how someone might get confused.
If someone else launched a company "Fogdeam", which sold similar software to yours, surely you'd go after them.