Earlier quoted context omitted.
Neither rape nor murder are inherently, definitionally wrong. There are situations in extremis where murder and rape are considered justifiable: in war, murder is often praised; and in an "everyone else is dead, humanity will go extinct" situation (e.g. the subjective belief of Lot's daughters, according to some traditions, in Genesis 19:31–36), rape might¹ be considered permissible. And both words are used to refer…
You are mistaken. > in war, murder is often praised; The killing of an enemy combatant, for example, is usually lawful, praised and not considered murder. Generally speaking, the killing of a civilian is sometimes a war crime and considered a murder. You also have a lot to say on the nuanced ethics of killing and on sexual violence, but these deal with the underlying concepts themselves and the words don't matter; in…
If you asked any (non-bloodthirsty) soldier, officer or general whether they'd press a button to magically achieve their military objectives without bloodshed, they'd certainly take that option. Killing enemy combatants is praised as good because it is (considered) a necessary evil, but "necessary evil" is awful for morale. If you take people outside that situation, they tend to hold the view that "killing is wrong", or "killing non-wrongdoers is wrong" at worst.
You've (re)defined the word "murder" to exclude "lawful killings of enemy combatants", but whether we use your or my definition, that doesn't change the morality of the actions. You also observed that philosophers do that kind of (re)definition all the time. That's the point I was trying to make.