appreciation vs sentiment

appreciation

noun
  • Accurate perception; true estimation. 

  • A rise in value. 

  • The act of appreciating. 

  • A fair valuation or estimate of merit, worth, weight, etc.; recognition of excellence; gratitude and esteem. 

sentiment

noun
  • A general thought, feeling, or sense. 

  • Feelings, especially tender feelings, as apart from reason or judgment, or of a weak or foolish kind. 

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