Today I want to ask if the two terms "member country" and "member state", in an international organisation, are the same and thus can be swapped for each other when we want to avoid repetition while discussing about it.
To give a common example, I will take "The United Nations" and "The European Union" into discussion.
For the United Nations: When I read about the organisation on official online website, I found that they use the term "Member States" rather than "Member Countries" (193 Member States of the UN)
However reading on the European Union's website shows that the organisation use the term "Member Countries" to identify its members (28 Member Countries of the European Union).
So my question is whether we can say
1) 193 Member States of the UN = 193 Member Countries of the UN
2) 28 Member Countries of the European Union = 28 Member States of the European Union