avoid vs undertake

avoid

verb
  • To try not to do something or to have something happen 

  • To stay out of the way of (something harmful). 

  • to keep away from; to keep clear of; to stay away from 

  • To try not to meet or communicate with (a person); to shun 

  • To make void, to annul; to refute (especially a contract). 

  • To defeat or evade; to invalidate. 

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 avoid and undertake occurred in a corpus of books? (source: Google Ngram Viewer )