breech vs viable

breech

adj
  • Born, or having been born, breech. 

adv
  • With the hips coming out before the head. 

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

  • A breech birth. 

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

  • 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. 

viable

adj
  • Able to live and develop. 

  • Capable of working successfully 

  • Able to live on its own (as for a newborn). 

  • Able to be done, possible, practicable, feasible. 

noun
  • An organism that is able to live and develop. 

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