1) Discriminator 2) Human 3) Individual 4) Mortal 5) Person 6) Somebody 7) Someone 8) Soul 1) Discriminator 
In electronics, a differentiator is a circuit that is designed such that the output of the circuit is approximately directly proportional to the rate of change (the time derivative) of the input. An active differentiator includes some form of amplifier. A passive differentiator circuit is made of only resistors and capacitors. ==Passive differenti...
• (n.) One who, or that which, differentiates.
a device or set of components for performing the mathematical operation of differentiation—i.e., supplying an output proportional to the derivative ...
a device for producing an output quantity proportional to the time derivative of the input quantity
Dif`fer·en'ti·a`tor noun One who, or that which, differentiates. 
[n] - a person who differentiates
discriminator noun a person who differentiates
a person or thing that differentiates. · an electronic device whose output signal is proportional to the derivative of its input signal. · a transducer or circuitwhose output is proportional to the rate of change of the input signal.