idol vs person of the hour

idol

noun
  • A cultural icon, or especially popular person. 

  • A popular entertainer, usually young, captivating and attractive, and often female, with an image of being close to fans. 

  • A graven image or representation of anything that is revered, or believed to convey spiritual power. 

person of the hour

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