closing vs gulch

closing

noun
  • In morphology, the erosion of the dilation of a set. 

  • The final procedure in a house sale, when documents are signed and recorded. 

  • The act by which something is closed. 

  • The end or conclusion of something. 

adj
  • Pertaining to the finish or ending of a series of events; occurring at the end or after all others. 

gulch

noun
  • A ravine-like or deep V-shaped valley, often eroded by flash floods; shallower than a canyon and deeper than a gully. 

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