slipperette vs zori

slipperette

noun
  • A soft slipper or similar foot covering, especially a disposable slipper of a kind distributed to train or aeroplane passengers. 

zori

noun
  • A sandal, usually of rubber, secured to the foot by two straps mounted between the big toe and its neighbour. 

  • A Japanese sandal made from rice straw or lacquered wood, worn with a kimono for formal occasions. 

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