doubt vs theism

doubt

noun
  • Disbelief or uncertainty (about something); (countable) a particular instance of such disbelief or uncertainty. 

verb
  • To be undecided about; to lack confidence in; to disbelieve, to question. 

theism

noun
  • Belief in the existence of at least one deity. 

  • Belief in the existence of a personal creator god, goddess, gods and/or goddesses present and active in the governance and organization of the world and the universe. The God may be known by or through revelation. 

  • A morbid condition resulting from excessive consumption of tea. 

How often have the words doubt and theism occurred in a corpus of books? (source: Google Ngram Viewer )