commissure vs junction

commissure

noun
  • A band of nerve tissue connecting the hemispheres of the brain, the two sides of the spinal cord, etc. 

  • The line where the upper and lower lips or eyelids meet. 

  • The joint between two bones. 

junction

noun
  • The boundary between two physically different materials, especially between conductors, semiconductors, or metals. 

  • A point in time between two unrelated consecutive broadcasts. 

  • A place where two things meet, especially where two roads meet. 

  • A place where two or more railways or railroads meet. 

  • The act of joining, or the state of being joined. 

  • The place where a distributary departs from the main stream. 

  • In the Raku programming language, a construct representing a composite of several values connected by an operator. 

  • electrical junction: a point or area where multiple conductors or semiconductors make physical contact. 

  • A kind of symbolic link to a directory. 

verb
  • To form a junction. 

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