Godforms are the highest level of thoughtform, they're thought entities that exist out of the collective belief of humanity in a concept, an example of a Godform could be "The Boogeyman" and "Santa Clause", but thoughtforms can also be places like "Fiji" or "Jupiter". Godforms operate beyond human will, but highly skilled magicians can summon them to aid them in battle for a brief period, sort of like a domain expansion from JJK.