keffiyeh vs mantilla

keffiyeh

noun
  • A headdress traditionally worn by some Arabs, also used as a scarf. 

mantilla

noun
  • A lace veil of Spanish origin worn over a woman's hair and shoulders. 

  • A woman's light cloak or cape made of silk, velvet, lace, or other material. 

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