purport vs purpose

purport

verb
  • To intend. 

  • To convey, imply, or profess (often falsely or inaccurately). 

noun
  • import, intention or purpose 

purpose

verb
  • To have or set as one's purpose or aim; resolve to accomplish; intend; plan. 

  • To have (an) intention, purpose, or design; to intend; to mean. 

noun
  • meaning for existing or doing something. 

  • Resolution; determination. 

  • Function, role. 

  • The end for which something is done, is made or exists. 

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