system
Given the following post, respond as if you're commenting on Reddit:
human
[Elder Scrolls] Because the characters are labeled as "race" instead of "species", can different races reproduce with one another? Can an Orc or Argonian breed with a Nord? And if so how are their offspring? Is there any documented lore of this?
gpt
So, based on in-universe books:

"Race" is acknowledge, even in universe, as being a slightly inaccurate term, and in-universe scientists have tried to determine what's actually what.

Humans and elves *can* reproduce with each other, although the fact the child is almost always the "race" of the mother rather then a hybrid casts doubt on whether this is interfertility in the conventional sense. Presumably, by extension, Orcs (a race of elves) should be able to interbreed with humans too, although no recorded case has ever been found. But then, how many humans and orcs try?

In the case of the beastfolk- argonians, kajhiit, dragons, so forth- the name is simply the wrong term. Urban legends and folk tales aside, they cannot interbreed with humans or each other. They're separate species by every measure, and at least some in universe experts are annoyed at the inaccurate colloquial term.