On this point, the definition of “god” also changes with religion and culture.
The taoists use this work in translation for any spirit that isn’t a human ghost, including egregores and the spirits of place or objects.
I reserve the terms for what I call “deity level” beings: they must be multidimentional, transcendent, ascended above human ascended master level (there are many levels of ascension) and not confined to this planet to qualify.
That’s just my working definition, your mileage may vary. Under this definition entities like Azazel are gods, while the spirit of a local healing well, while being called a god by the incumbent culture, is not. Not in that form anyway.
At some level every entity is ultimately connected to the Tao which some say is the one and only god, but I call that source, great spirit or Tao. Gods are individuals and manifest, so they are not the Tao.
I have no real use for the term’s demon or angel and see these beings as the exact same thing.