Learn English – the common expression to describe position starting from the last one

They are freely interchangeable in many everyday contexts, but there are differences in the tone of voice. "Meant to" has a more philosophical, fatalistic connotation, while "supposed to" might refer to a transgression or snafu of some sort. For example:

• Despite the best efforts of the director, the actors and the rest of the crew, the movie didn't do well- it just wasn't meant to be a blockbuster. Try substituting 'supposed to' here and it sounds way wonky.

• Despite the best efforts of the director, the actors and the rest of the crew, the movie didn't do well- it just wasn't supposed to be a blockbuster. Well, what can I say. It was supposed to be a blockbuster; unfortunately, it wasn't meant to become one.

So, my submission is, the context matters. 'Meant to' might be used in situations that can be remedied as well as in situations that can't, while 'supposed to' might be used in a situation that can possibly be reversed.

The use of "Korea" to mean "South Korea" is far more common in the adjectival form. E.g. "Korean automaker", "Korean pop music" or "Korean soap opera".

Owing to North Korea's status as an economical, cultural, and political walled garden - or perhaps it's more apt to say "walled mudflat" - there are very few words to which the adjective "Korean" commonly applies for outsiders. "Dictator", of course, is the obvious exception.

Thanks largely to the media, this adjectival shorthand usage is firmly entrenched.

In nounal form, my sense is that the mapping is much further from one-to-one. (Since I don't know how to search one of these online corpuses for "this when not neighbored by that", I can't confirm that anecdotal evidence with data, alas.)

While "Korea" would be formally correct within their own language since they are formally the Republic of Korea, in English the pattern of usage I observe is to at the very least differentiate them on first usage.

For example, this is a pattern I hear often in the financial news: "Korean automaker Kia announced today it will be bringing 50,000 new jobs to South Korea. The company has long dominated the auto market in Korea and is now seeking..."

First nounal mention: South Korea. Subsequent mentions can be simply Korea.

So I'd lean toward not linking the tag Korea to South Korea exclusively.