nameword vs vocable

nameword

noun
  • A noun. 

  • A designation or name given to an object, person or location. 

vocable

noun
  • A word or utterance, especially with reference to its form rather than its meaning. 

  • A syllable or sound without specific meaning, used together with or in place of actual words in a song. 

adj
  • Able to be uttered. 

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