commend vs undertake

commend

verb
  • To entrust or commit to the care of someone else. 

  • To recommend. 

  • To praise or acclaim. 

  • To mention by way of courtesy, implying remembrance and goodwill. 

  • To congratulate or reward. 

undertake

verb
  • To commit oneself (to an obligation, activity etc.). 

  • To pass a slower moving vehicle on the curbside rather than on the side closest to oncoming traffic. 

  • To take upon oneself; to start, to embark on (a specific task etc.). 

noun
  • The passing of slower traffic on the curbside rather than on the side closest to oncoming traffic. 

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