clean out vs lavage

clean out

verb
  • To clean, especially to tidy by removing the contents. 

  • To take all money or possessions from. 

lavage

verb
  • To wash a hollow organ 

noun
  • A washing. 

  • A washing of a hollow organ. 

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