Charge

Charge could mean:

Electric charge, the charge in electricity
to take charge, or being in charge means to take or have authority and responsibility for decisions
In firearms, to charge a weapon is to load it and ready it for firing
Charge (engine), the air or fuel/air mixture being fed into the intake in an internal combustion engine. Charge air usually refers to air that has not had fuel mixed with it.
During the European Middle Ages, a charge (youth) often meant an underage person placed under the supervision of a nobleman
Charge (warfare), a manoeuvre in battle where soldiers rush towards their enemy to engage in close combat
In context of wartime operations, to charge with certain rights, such as guaranteeing persons held in custody are allowed those rights
In money, a charge is what someone has to pay, such as a charge for using an automatic teller machine, entering a museum, being late with a payment, etc.
In basketball, a charge is an foul, called when an offensive player with the ball makes illegal contact with a defensive player who has legally established his position
CHARGE syndrome, birth defects in children
Charge card, similar to a credit card
A pen spinning trick where the pen makes conic rotations between two fingers

In law:

A criminal charge is an indictment before a court by a prosecuting authority
A jury charge is are jury instructions given by a judge to a jury concerning the law applicable to the case under consideration
An equitable charge is a security interest similar in effect to a mortgage