posterior vs stern

posterior

noun
  • The hinder parts of the body. 

  • The probability that a hypothesis is true (calculated by Bayes' theorem). 

adj
  • Following in order or in time. 

  • Next to, or facing the main stem or axis. 

  • Relating to or denoting presentation of a fetus in which the rear or caudal end is nearest the cervix and emerges first at birth. 

stern

noun
  • The hinder part of anything. 

  • A bird, the black tern. 

  • The tail of an animal; now used only of the tail of a dog. 

  • The post of management or direction. 

  • The rear part or after end of a ship or vessel. 

adj
  • Grim and forbidding in appearance. 

  • Having a hardness and severity of nature or manner. 

verb
  • To propel or move backward or stern-first in the water. 

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