freshen up vs lavage

freshen up

verb

  • to wash or groom oneself in order to be more attractive 

  • to freshen, make fresh, revivify, make new. 

lavage

verb

  • To wash a hollow organ 

noun

  • A washing. 

  • A washing of a hollow organ. 

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