dissolution vs last roundup

dissolution

noun
  • The termination of an organized body or legislative assembly, especially a formal dismissal. 

  • The quality of being dissolute. 

  • Dissolving, or going into solution. 

  • Disintegration, or decomposition into fragments. 

last roundup

noun
  • A final gathering of people or items; the final event in a series of events involving a group or organization. 

  • Death. 

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