affection vs heart

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. 

heart

noun
  • One's feelings and emotions, especially considered as part of one's character. 

  • A wight or being. 

  • A muscular organ that pumps blood through the body, traditionally thought to be the seat of emotion. 

  • A playing card of the suit hearts featuring one or more heart-shaped symbols. 

  • The centre, essence, or core. 

  • Vigorous and efficient activity; power of fertile production; condition of the soil, whether good or bad. 

  • The twenty-fourth Lenormand card. 

  • The seat of the affections or sensibilities, collectively or separately, as love, hate, joy, grief, courage, etc.; rarely, the seat of the understanding or will; usually in a good sense; personality. 

  • Emotional strength that allows one to continue in difficult situations; courage; spirit; a will to compete. 

  • A conventional shape or symbol used to represent the heart, love, or emotion: ♥ or sometimes <3. 

verb
  • To form a dense cluster of leaves, a heart, especially of lettuce or cabbage. 

  • To fill an interior with rubble, as a wall or a breakwater. 

  • To be fond of. Often bracketed or abbreviated with a heart symbol. 

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