breech vs rump

breech

noun
  • A garment whose purpose is to cover or clothe the buttocks. 

  • The part of a cannon or other firearm behind the chamber. 

  • A breech birth. 

  • The external angle of knee timber, the inside of which is called the throat. 

verb
  • To fit or furnish with a breech. 

  • To fasten with breeching. 

adj
  • Born, or having been born, breech. 

adv
  • With the hips coming out before the head. 

rump

noun
  • The buttocks. 

  • A cut of meat from the rump of an animal. 

  • The hindquarters of a four-legged mammal, not including its legs 

  • A remnant, as in Rump Parliament. 

verb
  • To turn one's back on, to show one's (clothed) backside to, as a sign of disrespect. 

  • To fuck. (Compare bum (verb).) 

  • To cheat. 

  • To ramble; to move (or talk) aimlessly. 

  • To move (someone or something) around. 

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