commanding vs optimum

commanding

adj
  • Impressively dominant. 

  • Tending to give commands, authoritarian. 

  • Dominating from above, giving a wide view 

noun
  • The act of giving a command. 

optimum

adj
  • The best or most advantageous; surpassing all others. 

noun
  • The best or most favorable condition, or the greatest amount or degree possible under specific sets of comparable circumstances. 

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