transact vs undertake

transact

verb
  • To do, carry through, conduct or perform some action. 

  • To exchange or trade, as of ideas, money, goods, etc. 

  • To conduct business. 

  • To carry over, hand over or transfer something. 

undertake

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

  • 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. 

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

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