superpower vs wald

superpower

noun
  • Excessive or superior power. 

  • A fictional extraordinary physical or mental ability, especially possessed by a superhero or supervillain. 

  • A sovereign state with dominant status on the globe and a very advanced military, especially the United States or formerly the Soviet Union. 

  • A tetration. 

verb
  • To give extraordinary powers to. 

wald

noun
  • Power; strength. 

  • Command; control; possession. 

  • Forest; woods. 

verb
  • To govern; inherit. 

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