For our purposes let’s just say that lore is “setting background”: information about the setting of a campaign. The paradigm is perhaps the history of the setting, which is literally lore that could be learned in game from sages or history books. But I would count also count its metaphysics, theology, organized religion, the nature of magic, and the like. And while we’re at it, we can add more humdrum facts about languages, prevailing forms of government, the economy, different social...
