involve vs regard

involve

verb
  • To complicate or make intricate. 

  • 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 envelop, enfold, entangle. 

regard

verb
  • To have to do with, to concern. 

  • To look at; to observe. 

  • To consider, look upon (something) in a given way etc. 

  • To face toward. 

noun
  • A particular aspect or detail; respect, sense. 

  • The worth or estimation in which something or someone is held. 

  • A steady look, a gaze. 

  • Slang for retard, a very bad stock trader. 

  • One's concern for another; esteem; relation, reference. 

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