1. 접속사로 쓸 때: although(~그럼에도 불구하고)와 같은 의미 

Although I was already full, I ate more food.
이미 배부르긴 했는데, 음식 더 먹었어.

Though I was already full, I ate more food.

*더 강조하고 싶을 때: Even though
I ate more food even though I was already full.

I ate more even though I was already full.

2. 부사를 쓸 때: but(그런데, 하지만)과 같은 의미

I can’t go to your birthday party. Thanks for inviting me though.
나 너 생일파티에 못갈 것 같아. 그래도 초대해줘서 고마워.

That looks like the right answer. I’m not sure though.
그 답이 맞는 답인 것 같아. 그런데 확실하진 않아.

I want to take my girlfriend out to eat. I need to get my paycheck first though.
나 여자친구 맛있는거 사주고 싶어. 하지만 일단 월급부터 받아야 해.