eau de cologne vs sachet

eau de cologne

sachet

noun
  • A cheesecloth bag of herbs and/or spices added during cooking and then removed before serving. 

  • A small, sealed packet containing a single-use quantity of any material. 

  • A small scented cloth bag filled with fragrant material such as herbs or potpourri. 

How often have the words eau de cologne and sachet occurred in a corpus of books? (source: Google Ngram Viewer )