love interest vs precious

love interest

noun
  • One who is of interest as a (potential) partner in love. 

  • A romantic relationship; a romance. 

  • A romantic plot or subplot in a film or book. 

precious

noun
  • Someone (or something) who is loved; a darling. 

adj
  • Regarded with love or tenderness. 

  • Contrived to be cute or charming. 

  • Treated with too much reverence. 

  • Thorough; utter. 

  • Blasted; damned. 

  • Of high value or worth. 

adv
  • Very; an intensifier. 

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