Korean, Basic for English speakers.

http://www.bensmatrix.com/culture/basickorean.html
This is good Korean example for communicating in text conversation.
Pronounciation is often described in character which we both have original in Korean and Japanese but less similarity in between.
Once in text communication, common language can majorly be English and hard for Japanese to describe Korean words appropriately in alphabet. (Vise versa, I think. )
This site can be a good help for such case.