closing vs conclusion

closing

noun
  • The end or conclusion of something. 

  • 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. 

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

conclusion

noun
  • The end, finish, close or last part of something. 

  • The end or close of a pleading, for example, the formal ending of an indictment, "against the peace", etc. 

  • The outcome or result of a process or act. 

  • In an argument or syllogism, the proposition that follows as a necessary consequence of the premises. 

  • A decision reached after careful thought. 

  • An estoppel or bar by which a person is held to a particular position. 

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