diminution vs elongation

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. 

elongation

noun
  • The act of lengthening 

  • the state of being lengthened 

  • The ratio of the extension of a material to the length of the material prior to stretching. 

  • Removal to a distance; withdrawal; a being at a distance; distance. 

  • The angular distance of a planet from the sun 

  • That which lengthens out; continuation. 

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