discipline

a branch of knowledge; "in what discipline is his doctorate?"; "teachers should be well trained in their subject"; "anthropology is the study of human beings"

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

the act of punishing; "the offenders deserved the harsh discipline they received"

develop (children's) behavior by instruction and practice; especially to teach self-control; "Parents must discipline their children"; "Is this dog trained?"

punish in order to gain control or enforce obedience; "The teacher disciplined the pupils rather frequently"