jungle vs smoke-filled room

jungle

noun
  • A place where people behave ruthlessly, unconstrained by law or morality. 

  • A large, undeveloped, humid forest, especially in a tropical region, that is home to many wild plants and animals; a tropical rainforest. 

  • Dense rough. 

  • A style of electronic dance music and precursor of drum and bass. 

  • A hairy vulva. 

  • Any uncultivated tract of forest or scrub habitat. 

  • An area where hobos camp together. 

  • A desert region. 

  • A migrant camp. 

  • A tangled mess. 

adj
  • resembling the fast-paced drumming of traditional peoples of the jungle. 

smoke-filled room

noun
  • A place where powerful people meet to decide a matter in secret, often of a political nature. 

  • Used other than figuratively or idiomatically: see smoke, filled, room. 

How often have the words jungle and smoke-filled room occurred in a corpus of books? (source: Google Ngram Viewer )