gesture vs undertaking

gesture

noun
  • An act or a remark that serves as a formality or as a sign of attitude. 

  • A motion made with a pointing device, or on a touchscreen, that is recognised by the system as a command. 

  • A motion of the limbs or body, especially one made to emphasize speech. 

verb
  • To make a gesture or gestures. 

  • To accompany or illustrate with gesture or action. 

  • To express something by a gesture or gestures. 

undertaking

noun
  • The act of one who undertakes (in either sense). 

  • A promise or pledge; a guarantee. 

  • That which is undertaken; any business, work, or project which a person engages in, or attempts to perform; an enterprise. 

  • The business of an undertaker, or the management of funerals. 

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