With / by

TamilKoreanMeaning
-உடன் (-udan)와 / 과· wa / gwawith (formal / written)
-உடன் (-udan) / -ஓடு랑 / 이랑· rang / irangwith (casual spoken)
  • 와 after vowels, 과 after consonants (formal / written)
  • 랑 after vowels, 이랑 after consonants (casual spoken)

친구 영화를 봐요

Chinguwa yeonghwa-reul bwayo

நண்பனுடன் படம் பார்க்கிறேன்

Nanbanudan padam paarkkiraen

와 (wa) follows a vowel. 친구 (chingu, friend) ends in the vowel sound ㅜ, so 와 is used. This is the formal written form meaning "with". In Tamil, -உடன் (-udan) does the same.

오늘 그 학교에 가요

Oneul geurang hakgyo-e gayo

இன்று அவனோடு பள்ளிக்கு போகிறேன்

Indru avanodu pallikku poakiraen

랑 (rang) follows a vowel. 그 (geu, he) ends in the vowel sound ㅡ, so 랑 is used. This is the casual spoken form meaning "with". In Tamil, -ஓடு (-odu) does the same.