caudal vs posticous

caudal

adj
  • Pertaining to the tail or posterior or hind part of a body. 

  • Toward the tail end (hind end) of the body; in bipeds such as humans, this direction corresponds to inferior. 

noun
  • A caudal vertebra. 

posticous

adj
  • posterior 

  • Situated on the outer side of a filament; said of an extrorse anther. 

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