java vs unleaded

java

noun
  • Coffee in general. 

  • A dance popular in France in the early 20th century. 

  • A blend of coffee imported from the island of Java. 

unleaded

noun
  • Decaffeinated coffee. 

  • Low-alcohol beer. 

  • An unleaded fuel. 

adj
  • Containing no more than 0.05 grams of lead per gallon. 

  • Decaffeinated. 

  • Without lead. 

  • Having low alcohol content. 

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