dungaree vs sailcloth

dungaree

noun
  • Pants or overalls made from such fabric. 

  • Heavy denim fabric, often blue; blue jean material. 

sailcloth

noun
  • A strong, durable fabric suitable for making sails for ships or boats. 

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