UNVERSIONED:
Let’s say we have a website which is in two different languages.
For example, let’s say one in English – United States of America and one in English – Canada.
We have a field called country in sample template.
Adding United States of America to the country field for English language version.
Now I have created a new version in English – United States of America.
But the value of the field country has not changed it.
I have created a new version in English – Canada, but the field is empty.
When we check unversioned, the value will be constant in between the versions of that respective languages only.
SHARED
The Value in the field of country - irrespective of versions or languages - remains the same.
Check the shared value.
Let's choose the English – Canada and if see the value of the country is the same as the versions in English.