You can say "realism" if you tell me exactly what you mean first. Don't even pretend that there's some gold standard for realism in role-playing which I automatically must acknowledge.
And yeah, those people who say, "Realism? But it's a fantasy game!" are just as annoying. They're up to no good when they say that.
This term is undefined and must be locally specified in order to make sense in a discussion of role-playing.