at the helm vs commanding

at the helm

prep
  • Steering a vessel. 

  • In charge of a company or project. 

commanding

noun
  • The act of giving a command. 

adj
  • Tending to give commands, authoritarian. 

  • Impressively dominant. 

  • Dominating from above, giving a wide view 

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