Countries Whose Official Names Do Not Contain Their Conventional Names

Most countries have official names that contain their conventional names (For example, "United States of America" contains "United States"). Can you name the countries that don't fit this pattern?
You must enter either both the country's conventional name and official name.
Countries like Russia (Russian Federation) are excluded, because the word "Russian" contains the word "Russia."
Quiz by MyMindWentBlank
Last updated: December 22, 2016
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First submittedDecember 22, 2016
Times taken116
Average score30.8%
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Official Name
Conventional Name
Argentine Republic
Democratic People's Republic of Korea
North Korea
French Republic
Hellenic Republic
Italian Republic
Kyrgyz Republic
Lao People's Democratic Republic
Portuguese Republic
Republic of China
Republic of Korea
South Korea
Slovak Republic
Swiss Confederation
United Mexican States
Level 45
Dec 22, 2016
Really interesting (I didn't really know any!)
Level 75
Dec 22, 2016
What about France and Portugal (French and Portuguese Republic)?
Level 47
Dec 22, 2016
Also Italian Republic and Argentine Republic.
Level 61
Dec 22, 2016
Whoops! You're absolutely right that those countries should be on this quiz. I was going by this list, which might be outdated or mis-translated:
Level 73
Dec 22, 2016
Tough quiz. My score was 4, thanks to the Korean peninsula.
Level 65
Jul 16, 2020
Czechia is the official short name of the Czech Republic or is not considering its conventional name because most people don't use it.
Level 44
Jul 5, 2021
How did you make two answer columns?
Level 89
Oct 6, 2022
On the quiz creation page, follow the "Frequently Asked Questions" link to the Reddit discussion page.

That particular topic is here:

(Not that you'll ever come back and see this, but it is a common question.)

Level 89
Oct 6, 2022
Ahhh....demonyms totally threw me off.