cotillion vs kirtle

cotillion

noun
  • A kind of woollen material for women's skirts. 

  • The music regulating the cotillion. 

  • A bold dance performed in groups of eight where women lift their skirts to display their ankles. 

verb
  • To dance the cotillion. 

kirtle

noun
  • A woman's gown; a woman's outer petticoat or skirt. 

  • A knee-length tunic. 

  • A short jacket. 

verb
  • To clothe or cover with, or as if with, a kirtle; to hitch up (a long garment) to the length of a kirtle. 

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