comprise vs need

comprise

verb
  • To contain or embrace. 

  • To compose; to constitute. 

  • To include, contain, or be made up of, defining the minimum elements, whether essential or inessential to define an invention. 

  • To be made up of; to consist of (especially a comprehensive list of parts). 

need

verb
  • To want strongly; to feel that one must have something. 

  • To be obliged or required (to do something). 

  • To be required; to be necessary. 

  • To have an absolute requirement for. 

noun
  • Lack of means of subsistence; poverty; indigence; destitution. 

  • A requirement for something; something needed. 

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