I can hardly verbalize numbers, especially if they have an "S" sound because I really struggle with those anyways. I also can't really say my own name at all because for me it seems words with a repeat of the same sound like "L" in Lily I tend to get stuck on. So for me its not specific words but its words with certain sounds as a whole that I try and avoid. I tend to rely on swapping words before I say them if I feel I'm going to have a hard time when speaking which usually is fine, aside from the occasional time no word works and I word things really weird.