apportionment vs subdividing

apportionment

noun
  • The act of apportioning or the state of being apportioned. 

  • The distribution of members of the House of Representatives according to the population of the various states. 

  • The allocation of direct taxation according to the population of the various states. 

subdividing

noun
  • An act or process of subdivision. 

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