의사소통이 · 의사소통을
communication
Example
외국인 친구와 의사소통이 잘 돼서 좋아요.
I'm happy that I can communicate well with my foreign friend.
Word parts
의 intention+사 thought+소 clear+통 pass through
Literally 'letting intentions flow through clearly'.
Good to know
Here 의사 means 'intention', not 의사 'doctor'; they're different words that sound the same.