agnosticism vs devotion

agnosticism

noun
  • Doubt, uncertainty, or scepticism regarding any subject of dispute. 

  • The view that absolute truth or ultimate certainty is unattainable, especially regarding knowledge not based on experience or perceivable phenomena. 

  • Doubt, uncertainty, or scepticism regarding the existence of a god or gods. 

  • The view that the existence of God or of all deities is unknown, unknowable, unproven, or unprovable. 

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 agnosticism and devotion occurred in a corpus of books? (source: Google Ngram Viewer )