brain vs ventricle

brain and ventricle both are nouns.

Word	Noun	Adjective	Verb	Adverb
brain	Yes	No	Yes	No
ventricle	Yes	No	No	No

brain (noun)	ventricle (noun)
that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord	a chamber of the heart that receives blood from an atrium and pumps it to the arteries
mental ability	one of four connected cavities in the brain; is continuous with the central canal of the spinal cord and contains cerebrospinal fluid
that which is responsible for one's thoughts, feelings, and conscious brain functions; the seat of the faculty of reason
the brain of certain animals used as meat
someone who has exceptional intellectual ability and originality

brain (verb)	ventricle (verb)
hit on the head
kill by smashing someone's skull