itinerant vs perambulatory

itinerant

adj
  • Habitually travelling from place to place. 

noun
  • A member of the Travelling Community, whether settled or not. 

  • One who travels from place to place. 

perambulatory

adj
  • Relating to perambulation. 

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