I've noticed people use (in speech) the word godness for "feminine god", e.g.:
Oh my godness!
However, in classic texts it is goddess, e.g. Shakespeare's "King Lear":
Hear, nature, hear; dear goddess, hear!
Suspend thy purpose, if thou didst intend
To make this creature fruitful!
Into her womb convey sterility!
It is my understanding that godness can be an urban slang for "divinity", but not for an impersonated deity.
Is godness just a mistake?