sexual relation vs skin

sexual relation

noun
  • Behaviour of a sexual nature between one or more individuals. 

skin

noun
  • person, chap 

  • A congealed layer on the surface of a liquid. 

  • The outer surface covering much of the wings and fuselage of an aircraft. 

  • The outer protective layer of the body of any animal, including of a human. 

  • The outer protective layer of the fruit of a plant. 

  • A set of resources that modifies the appearance and/or layout of the graphical user interface of a computer program. 

  • An alternate appearance (texture map or geometry) for a character model in a video game. 

  • The covering, as of planking or iron plates, outside the framing, forming the sides and bottom of a vessel; the shell; also, a lining inside the framing. 

  • A subgroup of Australian aboriginal people; such divisions are cultural and not related to an individual′s physical skin. 

  • That part of a sail, when furled, which remains on the outside and covers the whole. 

  • A drink of whisky served hot. 

  • The skin and fur of an individual animal used by humans for clothing, upholstery, etc. 

  • A vessel made of skin, used for holding liquids. 

  • Bare flesh, particularly bare breasts. 

  • Rolling paper for cigarettes. 

verb
  • To injure the skin of. 

  • To use tricks to go past a defender. 

  • To high five. 

  • To become covered with skin. 

  • To remove the skin and/or fur of an animal or a human. 

  • To cover with skin, or as if with skin; hence, to cover superficially. 

  • To apply a skin to (a computer program). 

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