involve vs subsume

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. 

subsume

verb
  • To place (any one cognition) under another as belonging to it; to include or contain something else. 

  • To consider an occurrence as part of a principle or rule; to colligate 

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