I am confused about subdomains and add on domains. My web host advertises that it hosts unlimited domains. I have one website hosted, I'll call it ebooks.com. I now wish to put up another, completely unrelated website that I'll call dogs.com and may wish later to put up yet another website that I'll call jetairplanes.com which will be unrelated to the first two websites.
Will the second and third websites be add on domains or subdomains?