balladeer vs swan

balladeer

noun
  • A singer, particularly a professional singer who performs ballads. 

verb
  • To sing a ballad 

swan

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. 

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

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

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