solar plexus vs waist

solar plexus

noun
  • A complex network of nerves and ganglia, located within the abdomen behind the stomach. 

waist

noun
  • The part of the body between the pelvis and the stomach. 

  • That part of the upper deck of a ship between the quarterdeck and the forecastle. 

  • A part of a piece of clothing that covers the waist. 

  • The middle portion of the hull of a ship or the fuselage of an aircraft. 

  • The narrow connection between the thorax and abdomen in certain insects (e.g., bees, ants and wasps). 

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