The crossword solution for the term 'Neighbor of Korea' is JAPAN, which is a country located in East Asia. It is the world's fourth-largest island country and is composed of 6, 852 islands. JAPAN is bordered by the Sea of JAPAN to the west and the Pacific Ocean to the east, and it is the only country to have four distinct seasons. It is also the only country in the world to have been attacked with nuclear weapons. JAPAN is the neighbor of Korea, located to the east of the Korean peninsula.