They are closely related. Ethnocentrism is when you are so wrapped up in your own culture or society that you are not really aware that some people behave differently. For example, some Americans might speak to a person from Another Country and ask "Who is your president?" not being aware that not all countries have presidents, or indeed that American law is not in force outside of the borders of the United States.
Isolationism is a deliberate foreign policy to not involve one's country in the issues of the wider world. China pursued an isolationist policy for centuries.
Having an isolationist or imperialist foreign policy can lead to ethnocentrism.
Yes, they can mean the same thing.
Yes they mean the same thing.
Yes they mean the same thing.
No, they are not the same thing. Mean and average are the same thing.
Shabby and different do not mean the same thing.
These two words can mean the same thing.
It can mean the same thing if you use it right:It's a solid source.It's a dependable source.They SOMETIMES can mean the same thing.
yes grain mean the same thing as particale
Yes, sanctuary and refuge mean the same thing.
Loyal and faithful mean essentially the same thing.
Yes, it can mean the same thing.
Yes. They can mean the same thing.