"Actually, I think the Aesir chose the name 'Frost Giants'. Some are a bit more giant than I am just now, but rarely more than another head or two higher." He looks thoughtful. "Jotun is the more proper term."

Surtur was far, far bigger than any Jotun, but no one called him a 'fire giant'. It is a bit peculiar now that Loki thinks of it.

"No. No, they were never human, but the superficial resemblance is undeniable. There are a number of beings like that here, you'll find, I think. Not everything that looks human is human, and there's a variety of types of humans as well, because so many worlds meet here."

"As to why Aesir and human look identical at a glance...well, their stories, human stories, claim the first two humans were created by Aesir. But the Aesir claim no such thing."