posterior vs side-by-side

posterior

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. 

noun
  • The hinder parts of the body. 

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

side-by-side

adj
  • Adjacent; juxtaposed. 

noun
  • Synonym of double rifle. Ellipsis of side-by-side rifle. 

  • Synonym of double-barreled shotgun. Ellipsis of side-by-side shotgun. 

  • A type of multipurpose off-highway utility vehicle, with four wheels, resembling a club cart or a golf cart 

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