hijab vs shawl

hijab

noun
  • A traditional headscarf worn by Muslim women, covering the hair and neck. 

  • The practice, among Muslim women, of covering the body after the age of puberty in front of non-related adult males. 

shawl

noun
  • A square or rectangular piece of cloth worn as a covering for the head, neck, and shoulders, typically by women. 

  • A fold of wrinkled flesh under the lips and neck of a bloodhound, used in scenting. 

verb
  • To wrap in a shawl. 

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