shanty vs vocative

shanty

noun
  • A rudimentary or improvised dwelling, especially one not legally owned. 

  • An unlicensed pub. 

  • A song a sailor sings, especially in rhythm to his work. 

  • A roughly-built hut or cabin. 

verb
  • To inhabit a shanty. 

adj
  • Jaunty; showy. 

  • Living in shanties; poor, ill-mannered and violent. 

vocative

noun
  • A word in the vocative case 

  • The vocative case 

  • Something said to (or as though to) a particular person or thing; an entreaty, an invocation. 

adj
  • Of or pertaining to calling; used in calling or vocation. 

  • Used in address; appellative (said of that case or form of the noun, pronoun, or adjective, in which a person or thing is addressed). For example "Domine, O Lord" 

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