swan vs tramp

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. 

tramp

verb
  • To travel or wander through. 

  • To tread upon forcibly and repeatedly; to trample. 

  • To cleanse, as clothes, by treading upon them in water. 

  • To hitchhike. 

  • To walk with heavy footsteps. 

  • To walk for a long time (usually through difficult terrain). 

noun
  • see Wikipedia:tramp steamer 

  • A long walk, possibly of more than one day, in a scenic or wilderness area. 

  • A disreputable, promiscuous woman; a slut. 

  • Of objects, stray and intrusive and unwanted 

  • A metal plate worn by diggers under the hollow of the foot to save the shoe. 

  • A homeless person; a vagabond. 

  • Any ship which does not have a fixed schedule or published ports of call. 

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