brain

[1]	brains , encephalon , intelligence , intellect , understanding , sense , thought , imagination , capacity , perspicacity , perceptiveness , perception , percipience , wisdom , sagacity , wit , discernment , acumen , knowledge , cognition
[2]	genius , brainpower , learning ability , mastermind , intellectual , mental capacity , mentality , leader , planner , wit
[3]	mind , head , psyche , nous
[4]	genius , mastermind , brainiac , Einstein