spirituality vs theology

spirituality

noun
  • Appreciation for religious values. 

  • The quality or state of being spiritual. 

  • Concern for that which is unseen and intangible, as opposed to physical or mundane. 

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 spirituality and theology occurred in a corpus of books? (source: Google Ngram Viewer )