hegemony vs world power

hegemony

noun
  • Domination, influence, or authority over another, especially by one political group over a society or by one nation over others. 

  • Dominance of one social group over another, such that the ruling group or hegemon acquires some degree of consent from the subordinate, as opposed to dominance purely by force. 

world power

noun
  • A nation or state so powerful that it can influence world affairs. 

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