This is the 208th most frequent Turkish word.
karşıya
"Karşıya" means "to the opposite side" or "across" in English.
Here, 'karşıya' refers to 'the other side', used in the context of crossing a path or road.
Karşıya geçmek için yola dikkatlice baktı.
She looked carefully at the road to cross to the other side.
In this sentence, 'karşısındaki' (derived from 'karşıya') means 'across', indicating location.
Odamın karşısındaki binadan bir ses duyuyorum.
I hear a sound coming from the building across from my room.
Here, 'karşısına' (derived from 'karşıya') means 'in front of someone', implying positional argument or confrontation.