brain

How to sign: that which is responsible for one's thoughts and feelings; the seat of the faculty of reason
"his mind wandered"; "I couldn't get his words out of my head";

Similiar / Same: mind, psyche, nous, head

Categories: cognition, knowledge, noesis

Within this category: ego, noddle, subconscious mind, tabula rasa, unconscious mind

brain

How to sign: that part of the central nervous system that includes all the higher nervous centers; enclosed within the skull; continuous with the spinal cord

Similiar / Same: encephalon

Categories: neural structure

brain

How to sign: mental ability
"he's got plenty of brains but no common sense";

Similiar / Same: brainpower, learning ability, mental capacity, mentality, wit

Categories: intelligence

brain

How to sign: someone who has exceptional intellectual ability and originality
"Mozart was a child genius"; "he's smart but he's no Einstein";

Similiar / Same: genius, mastermind, Einstein

Categories: intellect, intellectual

Within this category: prodigy