[She doesn't really understand it at first, mostly because she only knows the word "house" as pertaining to a place where humans live, but she does recognize that it's not being used that way.]

I think that's... almost it. But Gems can be traded between Diamonds if need be. I was made for Blue Diamond, but Pink Diamond had need of my abilities, so I was to be given to her for a time to help complete her colony. Is it like that for your "houses"?