atheism vs theology

atheism

noun
  • Absence of belief that any deities exist (including absence of the concept of deities). 

  • Absence of belief in a particular deity, pantheon, or religious doctrine (notwithstanding belief in other deities). 

  • Rejection of belief that any deities exist (with or without a belief that no deities exist). 

  • Belief that no deities exist (sometimes including rejection of other religious beliefs). 

theology

noun
  • Synonym of religious studies 

  • Subjective marginal details. 

  • An organized method of interpreting spiritual works and beliefs into practical form. 

  • The study of God, a god, or gods; and of the truthfulness of religion in general. 

  • A particular belief within a religion. 

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