cronyism vs sufferance

cronyism

noun
  • Favoritism to friends without regard for their qualifications, especially by appointing them to political positions. 

sufferance

noun
  • Acquiescence or tacit compliance with some circumstance, behavior, or instruction. 

  • A permission granted by the customs authorities for the shipment of goods. 

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