perambulate vs swan

perambulate

verb
  • To walk about, roam or stroll. 

  • To inspect (an area) on foot. 

swan

verb
  • To travel or move about in an aimless, idle, or pretentiously casual way. 

  • To declare (chiefly in first-person present constructions). 

noun
  • One whose grace etc. suggests a swan. 

  • This bird used as a heraldic charge, sometimes with a crown around its neck (e. g. the arms of Buckinghamshire). 

  • Any of various species of large, long-necked waterfowl, of genus Cygnus (bird family: Anatidae), most of which have white plumage. 

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