союз
но, однако
ОсновнойUsed to introduce something that is different or opposite to what was said before.
I like tea, but I prefer coffee.A1
Мне нравится чай, но я предпочитаю кофе.
She is tired but happy.A1
Она устала, но счастлива.
We wanted to go out, but it started to rain.A1
Мы хотели выйти, но начался дождь.