In Calvin and Hobbes: The Series, when the titular duo encounter two hawks in a tree, all of whom are in a tornado, the elder hawk refuses to call tornadoes by their name (only referring to them as "cyclones"). This ends up becoming a downplayed and Played for Laughs version of Poor Communication Kills.
The species of Gods and Demons in Divine Blood were named such by the humans.
Morrigan: I've never claimed to be the Creator of the universe. We started to interact with you, and you called us 'God'. Eventually we just kept having to respond to that and it became the name of the species. As far as I am concerned, the definition of 'God' is my species. And since I am a member of my species, I am not a false god.
Yakuza pretty consistently refer to themselves as "ninkyo dantai" ("chivalrous organization") and to rivals as "boryokudan" ("violence group").
In Turnabout Storm, Phoenix Wright gets called out quite a few times for not using the word pony. At first is for calling Twilight Sparkle a horse, getting corrected inmediately after it, and the next time is for using the word guy instead of pony. Nick doesn't seem too amused by this.
Lampshaded in 3 Slytherin Marauders how Dumbledore and other members of the Hogwarts staff often uses words like "pranks" and "schoolboy spirits" for what normal people know as "bullying."
In the Elizabeth Quatermain universe, Elizabeth's father Allan narrates the events from his own separate side volume, in which he refuses to refer to Elizabeth and her half-brother Harry as anything other than Daughter and Son. In the main storyline, meanwhile, Skinner has a good half-dozen nicknames for Elizabeth, but uses her real name only once.
Earth And Sky: It's Doctor Twilight Sparkle these days.
In The Immortal Game, many characters repeatedly state that "titles are important". The best example is Esteem, who uses it so much that it's practically his Catch Phrase (considering the character, it's probably to remind everyone that he's both a knight and a General).
In Sophistication And Betrayal, Rarity gets very frustrated whenever her boyfriend refers to elbow gloves as "socks". A fact he occasionally deliberately takes advantage of.
In My Little Unicorn The Grand Ruler is referred to as a "Three-Horned Winged Unicorn", rather than a tricorn.
In X-Men: Revolution (Which has since been renamed), Betsy Braddock repeatedly insists on being called 'English, not British, its a common misconception' whenever someone refers to them as the former. This was because two readers complained about the stereotypes used in characterizing her and any non-American characters used, with one telling them that 'British' is an incorrect term, especially when referring to them, and she rewrote the entire story to remove the stereotypes, and for her added this. Betsy's brother Brian, however, doesn't have a problem being referred to as 'Captain Britain', due to it being his self picked title. Ironically, Betsy once served in the role.
