census vs prospectus

census

noun
  • An official count or enumeration of members of a population (not necessarily human), usually residents or citizens in a particular region, often done at regular intervals. 

  • Count, tally. 

verb
  • To collect a census. 

  • To conduct a census on. 

prospectus

noun
  • 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. 

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

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

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