govern vs take the helm

govern

verb
  • To control the actions or behavior of; to keep under control; to restrain. 

  • To require that a certain preposition, grammatical case, etc. be used with a word; sometimes used synonymously with collocate. 

  • To exercise a deciding or determining influence on. 

  • To make and administer the public policy and affairs of; to exercise sovereign authority in. 

  • To control the speed, flow etc. of; to regulate. 

  • To have or exercise a determining influence. 

  • To exercise political authority; to run a government. 

noun
  • The act of governing 

take the helm

verb
  • To take over responsibility (of something) from someone else 

  • To assume responsibility for steering a ship 

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