dirndl vs sarong

dirndl

noun
  • A traditional Alpine women's dress having a tight bodice and full skirt 

sarong

noun
  • A garment made of a length of printed cloth wrapped about the waist that is commonly worn by men and women in South and Southeast Asia, also in the Pacific islands. 

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