mastery vs wald

mastery

noun
  • The position or authority of a master; dominion; command; supremacy; superiority. 

  • Superiority in war or competition; victory; triumph; preeminence. 

  • The act or process of mastering; the state of having mastered; expertise. 

wald

noun
  • Command; control; possession. 

  • Power; strength. 

  • Forest; woods. 

verb
  • To govern; inherit. 

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