ఉదాహరణ : Social relations impose courtesy.
Duty constrains one to act often contrary to one's desires or inclinations.

పర్యాయపదాలు : enforce, impose

ఉదాహరణ : This holds the local until the express passengers change trains.
About a dozen animals were held inside the stockade.
The illegal immigrants were held at a detention center.
The terrorists held the journalists for ransom.

పర్యాయపదాలు : confine, hold, restrain

ఉదాహరణ : Tighten the rules.
Stiffen the regulations.

పర్యాయపదాలు : stiffen, tighten, tighten up