bosom vs chest wall

bosom

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

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

  • A woman's breast(s). 

  • 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. 

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. 

chest wall

noun
  • The set of tissues that bound the thoracic cavity, including the rib cage, fascia, muscles etc. 

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