plan vs prospectus

plan

noun
  • A set of intended actions, usually mutually related, through which one expects to achieve a goal. 

  • A drawing showing technical details of a building, machine, etc., with unwanted details omitted, and often using symbols rather than detailed drawing to represent doors, valves, etc. 

  • A subscription to a service. 

  • A method; a way of procedure; a custom. 

  • A two-dimensional drawing of a building as seen from above with obscuring or irrelevant details such as roof removed, or of a floor of a building, revealing the internal layout; as distinct from the elevation. 

verb
  • To create a plan for. 

  • To intend. 

  • To design (a building, machine, etc.). 

  • To make a plan. 

prospectus

noun
  • A document which describes a proposed endeavor (venture, undertaking), such as a literary work (which one proposes to write). 

  • A booklet or other document giving details of a share offer for the benefit of investors. 

  • A document, distributed to prospective members, investors, buyers, or participants, which describes an institution (such as a university), a publication, or a business and what it has to offer. 

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