kimono vs nightgown

kimono

noun
  • A bathrobe or dressing gown. 

  • A traditional Japanese T-shaped, wrapped-front garment with square sleeves and a rectangular body, now generally worn only on formal occasions. 

  • A long robe-like garment in Western fashion, which may be open at the front, loosely inspired by the Japanese garment. 

  • A yukata. 

nightgown

noun
  • A dressing gown. 

  • A long loose robe worn mainly by women for sleeping in. 

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