cerebellum vs endbrain

cerebellum

noun
  • Part of the hindbrain in vertebrates. In humans it lies between the brainstem and the back of the cerebrum and is formed of two lateral lobes and a median lobe. It plays an important role in sensory perception, motor output, balance and posture. 

endbrain

noun
  • The anterior part of the forebrain; the telencephalon. 

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