elicit vs touch off

elicit

verb
  • To evoke, educe (emotions, feelings, responses, etc.); to generate, obtain, or provoke as a response or answer. 

  • To draw out, bring out, bring forth (something latent); to obtain information from someone or something. 

  • To use logic to arrive at truth; to derive by reason 

touch off

verb
  • To start; to cause, especially used for unstable situations that may magnify if disturbed. 

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