I honestly had never heard the term befure using this site. My understanding back when I only looked up furry art to goof to was simply that some (most) artists draw their characters very cartoonishly (including many with anime faces) while others lean more towards realism and that was it. I'm still not entirely sure what it really means. It seems when most people use it they mean le tranime gorl plus ears and tail but I've seen at least one artist who's considered kemono despite drawing rather realistically simply because they're Japanese, it looks like. There's one funny post on this website that branded the flat-faced style as Jakartan.