blockbuster vs hardback

blockbuster

noun
  • Anything very large or powerful; a whopper. 

  • A large firework of the firecracker type; an M-80. 

  • One who engages in blockbusting (technique encouraging people to sell property). 

  • A high-explosive bomb used for the purposes of demolishing extensive areas, such as a city block. 

  • Something, such as a film or book, that sustains exceptional and widespread popularity and achieves enormous sales, as opposed to a box office bomb. 

  • Something, especially an event or a film, book or other creative work, that is intended to achieve high sales (perhaps indicated by large budgets or high advertising spending) or that is conceived on a large or epic scale 

hardback

noun
  • A book with a solid binding. 

adj
  • Having a solid binding. 

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