I figure we can discuss this to its fullest without any agitation, but in the unlikely event that it gets too wild (I legitimately have faith in this awesome fanbase) I'll take this down.
I saw in an article recently that D&D has decided to reevaluate calling its orcs and humans "races" because of "racist undertones." They have proposed to start calling them "species." Political nonsense aside, this is scientifically inaccurate. Species can reproduce together, but members of two different species cannot. Hybrids of these beings exist in D&D unless I'm mistaken, therefore from a biological standpoint they are the same species, and the nest division should be race.
Of course, there are some complications. Hybrids of Tolkien orcs, elves, and men exist, but they clearly aren't the same species. Perhaps our modern scientific classification just doesn't work in a fantasy world like this. Thoughts?