Saracen vs hajji

Saracen

noun
  • A type of six-wheeled armoured personnel carrier. 

  • A member of a nomadic people from the Sinai near the Roman province of Arabia in the early centuries CE, who were specifically distinct from Arabs. 

hajji

noun
  • A Muslim or Arab. 

  • a Muslim who has participated in a hajj. 

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