corselet vs sheath

corselet

noun
  • The thorax of an insect. 

  • An entire suit of armor, made up chiefly of the breastplate and backpiece worn with a headpiece and with a gorget, pauldrons, vambraces, gauntlets, and tassets attached. 

  • Armor for the body, for example a breastplate and backpiece taken together. 

  • A tight-fitting item of clothing which covers the body and not the limbs. 

  • A type of women's underwear, combining a bra and a girdle in one garment; a corselette. 

sheath

noun
  • One of the elytra of an insect. 

  • The base of a leaf when sheathing or investing a branch or stem, as in grasses. 

  • A holster for a sword; a scabbard. 

  • A condom. 

  • The foreskin of certain animals (for example, dogs and horses). 

  • A tight-fitting dress. 

  • Anything that has a similar shape to a scabbard that is used to hold an object that is longer than it is wide. 

  • The insulating outer cover of an electrical cable. 

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