improvement vs shrinking

improvement

noun
  • Increase; growth; progress; advance. 

  • The act of improving; advancement or growth; a bettering 

  • Something which is improved 

  • Valuable additions or betterments, for example buildings, clearings, drains, fences, etc., on premises. 

  • A useful addition to, or modification of, a machine, manufacture, or composition. 

  • The state of being improved; betterment; advance 

  • The act of making profitable use or application of anything, or the state of being profitably employed; practical application, for example of a doctrine, principle, or theory, stated in a discourse. 

shrinking

noun
  • The act of one who, or that which, shrinks; act of becoming smaller or moving timidly away. 

adj
  • Shy and retiring. 

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