ballooning vs diminution

ballooning

adj
  • Growing rapidly as a balloon. 

  • Rising high in the air. 

noun
  • The act of something that swells or expands. 

  • The sport or hobby of flying in a hot-air balloon. 

  • The mechanical kiting used by spiders, mites, caterpillars, etc. to travel through the air. 

diminution

noun
  • A lessening, decrease or reduction. 

  • a compositional technique where the composer shortens the melody by shortening its note values. 

  • The act or process of making diminutive. 

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