gravitation~radiation

association~cognition

compression~tension

brain~mind

particle~wave

electron~positron

mass~gravity

physical~mental

technology~science

receptor~transmitter

inorganic~organic

recycle~synthesize

sensation~perception

binding~transduction

man~god

symbol~icon

sun~moon

mechanism~phenomenon

dynamic~static

chemical~electrical

experiment~theory

energy~matter

absorption~reflection

power~stamina

brain~neuron

chakra~flow

inward~outward

fractional~whole

art~science

acceleration~boson

physics~metaphysics

departure~arrival

light~vision

organic~inorganic

energy~dynamics

fusion~fission