So Klingons aren't allowed to have "warbirds" in their vocabulary because of the Romulans?
"Praetor... They've got warbirds!"
"Who?"
"The Klingons!"
"What?! Our warbirds?"
"No, their own!"
"What?! Only the mighty Romulan Empire is supposed to have warbirds! We are after all, the only species to have birds on our planet, don't we?"
"Yes sir, whatever you say sir"
"Well, then it's decided. WE GO TO WAR!!!"