I'm currently working on converting the D&D 3.5e Eberron adventure Eyes of the Lich Queen to revised 5e, and I'm noticing all sorts of little terminology discrepancies in the 2025 Monster Manual stat blocks that I didn't really notice before. It's irksome - it's obvious different people wrote different stat blocks using slightly different wording for matching/similar abilities and then no one bothered to go through the book and edit them for consistency.
So, for instance, you get the Ghast and the Ghast Gravecaller, which are one after the other in the book. But the ghast has an ability that reads "If the target is a non-Undead creature ..." while the Ghast Gravecaller's version of that ability reads "If the target isn't an Undead ..."
More irksome are all the spellcasting creatures that get Bonus Actions, Reactions, and/or Legendary Actions that let them cast a spell "using the same spellcasting ability as Spellcasting", which is clunky and silly, but then whoever wrote the dragons just went with the more cleaner and clearer "uses Spellcasting to cast ..." instead.
I really wish WotC had put the effort into doing a proper editorial polish on the revised rules!
/rant
