afferent vs neural

afferent

noun
  • An afferent structure or connection 

adj
  • Carrying towards. 

neural

adj
  • Of, or relating to the nerves, neurons or the nervous system. 

  • Modelled on the arrangement of neurons in the brain. 

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