I like 'god' as a title rather than a state of being.
Different gods can have vastly different powersources, abilities, and limitations.
You can worship a forest spirit, an immortal lich, or a giant sea monster. You can even worship your king as a god. These can all be called gods because they have people worshipping them, but being a god doesn't make them more powerful, it just means they have followers who will do what they say.