goodbye vs salutatory

goodbye

noun
  • An utterance of goodbye, the wishing of farewell to someone. 

intj
  • Farewell; a formula used to another person or persons when the speaker, writer, or person addressed is departing. 

verb
  • To say goodbye; to wish somebody farewell on parting. 

salutatory

noun
  • A greeting; an address, speech or article of greeting; the first editorial by the new editor of a newspaper or periodical; an introduction or preface. 

adj
  • Characteristic of or relating to a salutation or greeting. 

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