take the helm vs wield

take the helm

verb
  • To assume responsibility for steering a ship 

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

wield

verb
  • To exercise (authority or influence) effectively. 

  • To handle with skill and ease, especially a weapon or tool. 

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