constraint

nouns

the state of being physically constrained
"dogs should be kept under restraint"
constraint, restraint
a device that retards something's motion
"the car did not have proper restraints fitted"
constraint, restraint
the act of constraining; the threat or use of force to control the thoughts or behavior of others
constraint
is a type of (narrower)
the act of keeping something within specified bounds (by force if necessary)
"the restriction of the infection to a focal area"
confinement, restriction