perambulatory vs rootless

perambulatory

adj
  • Relating to perambulation. 

rootless

adj
  • Without (the use of) a root user account. 

  • Being a wanderer; having no ties to a particular locale. 

  • Of a plant or another thing, having no roots. 

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