Is there a difference, in the Chinese mythology, between a Huli Jing and a Hujing?Hu?

I am doing research on Chinese mythology and I came across a website with information about the fox spirit and I read that the two names had two different meanings for a fox spirit. The first name was Huli Jing and the second was Hujing. Is there really such a thing as the Hujing? because it was the only website that I can find with that term.