dictator vs magnate

dictator

noun
  • A tyrannical boss or authority figure. 

  • A person who dictates text (e.g. letters to a clerk). 

  • A totalitarian leader of a country, nation, or government. 

  • A magistrate without colleague in republican Ancient Rome, who held full executive authority for a term granted by the senate (legislature), typically to conduct a war. 

magnate

noun
  • A person of rank, influence or distinction in any sphere. 

  • In medieval and early modern Italy, a member of a legally defined category of especially wealthy patrician families, often deprived of the right to political participation by republican governments. 

  • Powerful industrialist; captain of industry. 

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