- There are two cars there.
- Which one is yours?
- The green car is mine.
By using "green" you have cleared up the confusion.
We use adjectives to describe anything - it doesn't matter how many of them there are. There is no reason why someone could not say "I have been to dynamic Korea" in the same way they might say "I have been to beautiful Greece". They are just giving their opinion of the country.
Student or Learner