joss vs unluckiness

joss

noun
  • A heathen divinity. 

  • Luck. 

  • A Chinese household divinity; a Chinese idol. 

unluckiness

noun
  • The state, quality, or condition of being unlucky or unfortunate; misfortune. 

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