crystallization vs dispersal

crystallization

noun
  • The formation of a solid from a solution, melt, vapour or from a different solid phase 

  • The act or process by which a substance in solidifying assumes the form and structure of a crystal, or becomes crystallized. 

  • The process or the result of becoming more definite or precise. 

  • The body formed by crystallizing. 

dispersal

noun
  • The act or result of dispersing or scattering; dispersion. 

  • A dispersal prison. 

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