Religion

If Tyr showed up in my living room this afternoon, I'd have to call him a god. He's not omnipotent enough to re-grow that hand, omniscience seems to be Heimdall's domain, but Tyr is as much a god as any.

Zeus would also qualify, but the Titans were more powerful than the Greek gods. Even there, Prometheus had his liver torn out every day and while it's true that recovery from that would be impressive, having it happen to you all the time shows some limits.

Heck, even within the xian pseudo-monotheism, the Jesus character is supposed to be a god, but that whole, "Why have you forsaken me?" routine does not suggest either omniscience or omnipotence. More broadly, are the offspring of male gods and mortal women (always seems to work that way for some reason...) actual gods? Demi-gods? Demi-semi-skinny-half caf-gods?

I'd almost feel better treating gods like pornography and falling back on "I know it when I see it."