ebb and flow vs lavage

ebb and flow

verb

  • To alternately ebb and flow. 

noun

  • A large flowing out and in. 

  • The flowing out and in of the tide. 

lavage

verb

  • To wash a hollow organ 

noun

  • A washing. 

  • A washing of a hollow organ. 

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