comprise vs involve

comprise

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

  • 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. 

involve

verb
  • To comprise or include; to have as a related part. 

  • To take in; to gather in; to mingle, blend or merge. 

  • To cause or engage (someone or something) to participate or to become connected or implicated. 

  • To complicate or make intricate. 

  • To envelop, enfold, entangle. 

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