confluent vs winterbourne

confluent

noun
  • A stream uniting and flowing with another; a confluent stream. 

adj
  • Given a binary operation →_𝛽 on a set A, and its reflexive, transitive closure ↠_𝛽 , then, for all a1, a2, and a3 in A, if a1 →_𝛽 a2 and a1 →_𝛽 a3, then there must exist an a4 in A such that a2 ↠_𝛽 a4 and a3 ↠_𝛽 a4. 

  • Exactly the same size as another triangle. 

  • Converging, merging or flowing together into one. 

  • Converging, especially as viewed on a weather chart. 

  • Describing cells in a culture that merge to form a mass. 

winterbourne

noun
  • A stream that only flows in winter or after wet weather, particularly in an area rich in limestone. 

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