discipline

A branch of knowledge.

“in what discipline is his doctorate?”

The act of disciplining.

“the offenders deserved the harsh discipline they received”

A system of rules of conduct or method of practice.

“he quickly learned the discipline of prison routine”

“for such a plan to work requires discipline”

The trait of being well behaved.

“he insisted on discipline among the troops”

Training to improve strength or self-control.

Develop (a child's or animal's) behavior by instruction and practice; especially to teach self-control.

“Parents must discipline their children”

Punish in order to gain control or enforce obedience.

“The teacher disciplined the pupils rather frequently”