artisan vs rolly polly

artisan

noun
  • A skilled manual worker who uses tools and machinery in a particular craft. 

  • A person who displays great dexterity. 

adj
  • artisanal 

rolly polly

noun
  • A woodlouse. 

  • A forward roll or a backwards roll. 

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