Qual è la differenza tra restrained e costrained ?Sentiti libero di rispondere con un esempio.

restrained can mean to "hold back" as in holding back your emotions or an action. in my opinion it implies someone is "holding something or someone back" with at least a bit of effort

for example: he restrained himself from getting angry

they were restrained from entering the meeting

it could also mean someone is self controlled, though there is a connotation that they might be self controlled to the point of being emotionless.

for example: she's so restrained.

constrained has a greater connotation of being overly controlled or not having much freedom at all. it can be used to describe both people and things.

for example: he was acting so constrained it was really weird.

why is it so constrained? ( referring to a situation where you dont have much freedom to do what you want )

a lot of people are living under constrained circumstances (meaning a lot of people could either not have enough money to live a comfortable life and buy whatever they want, or people are living in a place where they dont have much freedom)