focus vs heart

focus

noun
  • Concentration of attention. 

  • The fact of the convergence of light on the photographic medium. 

  • A point of a conic at which rays reflected from a curve or surface converge. 

  • The most important word or phrase in a sentence or passage, or the one that imparts information. 

  • The quality of the convergence of light on the photographic medium. 

  • A point at which reflected or refracted rays of light converge. 

  • The exact point of where an earthquake occurs, in three dimensions (underneath the epicentre). 

  • The status of being the currently active element in a user interface, often indicated by a visual highlight. 

  • An object used in casting a magic spell. 

verb
  • To adjust (a lens, an optical instrument) in order to position an image with respect to the focal plane. 

  • To transfer the input focus to (a visual element), so that it receives subsequent input. 

  • To direct attention, effort, or energy to a particular audience or task. 

  • To concentrate one’s attention. 

  • To concentrate during a task. 

  • To cause (rays of light, etc) to converge at a single point. 

  • To aggregate figures of accounts. 

heart

noun
  • The centre, essence, or core. 

  • 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. 

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

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

  • 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 focus and heart occurred in a corpus of books? (source: Google Ngram Viewer )