What is the trip to Korea translated into English? Should I use JOURNEY, TRAVEL, TOUR or TRIP?

I think the most suitable place here should be trip.

Journey means journey, journey. If it is a journey to South Korea, it is a journey to South Korea from the starting point, so it is not appropriate.

Travel, travel generally refers to tourism. Traveling to South Korea translates into traveling to South Korea, and traveling to South Korea can be translated into traveling to South Korea, which is also feasible. But if you want to translate it into' journey', traveling is not appropriate.

Tourism mainly refers to a trip to a scenic spot, a day trip and the like, so it is not appropriate.

Trip usually refers to a destination. In the United States and Australia, high school students will travel to Europe after graduation or during their college years. You may have heard the phrase Euro Trip in movies, which means to travel to Europe. So the trip to South Korea is the same, and Korea Trip is the most correct translation.

Good luck with your study!