This is the 53rd most frequent Korean word.
한국
"한국" means "Korea" in English.
In this sentence, '한국' refers to the country of Korea in the nominative case, serving as the subject to the descriptive verb.
한국은 아름다운 나라입니다.
Korea is a beautiful country.
Here, '한국' is used as a destination and is marked with the locative particle '에' indicating directionality.
저는 한국에 가고 싶어요.
I want to go to Korea.
In this sentence, '한국' is in the genitive (possessive) form through the addition of '의', showing ownership or association.