An activity in which speakers of different languages teach and practice languages with each other (often used with the verb 'suru').
大学の交換留学生と毎週言語交換をしている。
I do language exchange every week with an international exchange student at my university.
言語交換アプリでネイティブのパートナーを見つけた。
I found a native partner on a language-exchange app.
言語交換は教える時間と学ぶ時間を分けて行うのが一般的だ。
In language exchange it's common to split time between teaching and learning.