affection vs devotion

affection

noun
  • A feeling of love or strong attachment. 

  • The act of affecting or acting upon. 

  • The state of being affected, especially: a change in, or alteration of, the emotional state of a person or other animal, caused by a subjective affect (a subjective feeling or emotion), which arises in response to a stimulus which may result from either thought or perception. 

  • An attribute; a quality or property; a condition. 

  • An emotion; a feeling or natural impulse acting upon and swaying the mind. 

devotion

noun
  • Feeling of strong or fervent affection; dedication 

  • The act or state of devoting or being devoted. 

  • Religious veneration, zeal, or piety. 

  • A prayer (often found in the plural) 

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