atheism vs devotion

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). 

devotion

noun
  • The act or state of devoting or being devoted. 

  • Feeling of strong or fervent affection; dedication 

  • Religious veneration, zeal, or piety. 

  • A prayer (often found in the plural) 

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