engross vs involve

engross

verb
  • To monopolize; to concentrate (something) in the single possession of someone, especially unfairly. 

  • To write (a document) in large, aesthetic, and legible lettering; to make a finalized copy of. 

  • To completely engage the attention of. 

involve

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

  • To complicate or make intricate. 

  • To envelop, enfold, entangle. 

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