shampoo vs straighten up

shampoo

verb
  • To wash (i.e. the hair, carpet, etc.) with shampoo. 

  • To wash one's own hair with shampoo. 

  • To press or knead the whole surface of the body of (a person), and at the same time to stretch the limbs and joints, in connection with the hot bath. 

noun
  • Champagne. 

  • A traditional Indian and Persian body massage given after pouring warm water over the body and rubbing it with extracts from herbs. 

  • An instance of washing the hair or other fibres with shampoo. 

  • A commercial liquid soap product for washing hair or other fibres/fibers, such as carpets. 

straighten up

verb
  • to tidy; tidy up 

  • to start living a reformed life 

  • to sit up straight, to stop hunching. 

  • to steer straight 

  • to deal with; put in order 

  • To become straight, or straighter 

  • To clarify 

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