I really don't know what to write here ...
I have one word which has several (2 or more) meanings
Each of the meanings is a teapot (first, second ...)
Try to figure out the word with my hints.
My first teapot should use my second teapot
My second teapot shouldn't be my first teapot, when you
do my third teapot against the wall
My first teapot is a human
My second teapot is a part of my first teapot
My third teapot is a move all humans do
Use my third teapot
It's a critical hit
My first teapot can gain money and fame
My second can gain Voltage
My third can gain speed
Good luck and have fun :)