brain vs cerebrum

brain

noun
  • A part of the brain, especially associated with particular mental functions, abilities, etc. 

  • Mind. 

  • A loose compartment of a backpack that straps on over the top opening. 

  • An intellectual or mental capacity. 

  • A person who provides the intelligence required for something. 

  • By analogy with a human brain, the part of a machine or computer that performs calculations. 

  • Oral sex. 

  • An intelligent person. 

  • Intellect. 

  • The control center of the central nervous system of an animal located in the skull which is responsible for perception, cognition, attention, memory, emotion, and action. 

verb
  • To strike (someone) on the head. 

  • To destroy; to put an end to. 

  • To dash out the brains of; to kill by smashing the skull. 

cerebrum

noun
  • The principal and most anterior part of the brain in vertebrates, which is located in the front area of the skull and divided into two hemispheres, left and right, separated by a fissure. In humans it is the largest part of the brain and is responsible for the integration of complex sensory functions and the initiation and coordination of voluntary activity, and the higher mental functions such as consciousness, thought, reason, emotion, and memory. 

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