purity vs spirituality

purity

noun
  • The state or degree of being pure. 

spirituality

noun
  • The quality or state of being spiritual. 

  • Appreciation for religious values. 

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

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