When to use foreign language in Korean
Korean: 외국어[ oe-guk-eo ]

When to use it
A foreign language (외국어) is a language from another country, like English, Chinese, or French. Korean learners often use this word when talking about school subjects, studying, or travel. You can use it to talk about learning, speaking, hearing, or reading a language that is not your own.
Example sentences
저는 학교에서 외국어를 배워요.
I learn a foreign language at school.
언니는 집에서 외국어 숙제를 해요.
My older sister does her foreign language homework at home.
이 책은 외국어 공부에 좋아요.
This book is good for studying a foreign language.
여행 중에 외국어를 많이 들었어요.
I heard a lot of foreign language while traveling.
그 가게 직원은 외국어를 잘해요.
That store worker speaks a foreign language well.
친구와 외국어로 짧게 인사했어요.
I greeted my friend briefly in a foreign language.