bagwash vs lavage

bagwash

noun
  • A type of laundry in which the washing was returned to the customer in a bag, undried and unpressed. 

lavage

noun
  • A washing. 

  • A washing of a hollow organ. 

verb
  • To wash a hollow organ 

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