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

সমার্থক : enforce, impose

উদাহরণ : 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.

সমার্থক : confine, hold, restrain

উদাহরণ : Tighten the rules.
Stiffen the regulations.

সমার্থক : stiffen, tighten, tighten up