bosom vs knocker

bosom

noun
  • A woman's breast(s). 

  • Any thing or place resembling the breast; a supporting surface; an inner recess; the interior. 

  • A depression round the eye of a millstone. 

  • The seat of one's inner thoughts, feelings, etc.; one's secret feelings; desire. 

  • The protected interior or inner part of something; the area enclosed as by an embrace. 

  • The part of a dress etc. covering the chest; a neckline. 

verb
  • To belly; to cause to billow, swell or bulge. 

  • To enclose or carry in the bosom; to keep with care; to take to heart; to cherish. 

  • To conceal; to hide from view; to embosom. 

  • To belly; to billow, swell or bulge. 

adj
  • In a very close relationship. 

knocker

noun
  • A woman's breast. 

  • A person who knocks. 

  • A critic; one who disparages. 

  • A person who knocks (denigrates) something. 

  • One who defaults on payment of a wager. 

  • A large cockroach, especially Blaberus giganteus, of semitropical America, which is able to produce a loud knocking sound. 

  • A large, boulder-shaped outcrop of bedrock in an otherwise low-lying landscape, chiefly associated with a mélange. 

  • A device, usually hinged with a striking plate, used for knocking on a door. 

  • A mechanical device in a pinball table that produces a loud percussive noise. 

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