constipation vs impoundment

constipation

noun
  • The act of crowding anything into a lesser space, or the state of being crowded or pressed together; condensation. 

  • A state of the bowels in which the evacuations are infrequent and difficult, or the intestines become filled with hardened faeces 

impoundment

noun
  • The act of impounding 

  • A body of water impounded within an enclosure, such as a reservoir 

  • The state of being impounded 

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