This is the 4533rd most frequent Chinese word.
東南
Southeast.
Here, "東南" denotes a geographical region or direction, specifically "southeast."
香港位于中國的東南部。
Hong Kong is located in the southeast part of China.
Here, "東南" is used to refer to the compass direction "southeast" towards which the windows face.
我家窗户朝向東南,光线很好。
My house's window faces southeast, providing excellent lighting.
In this sentence, "東南" is used to describe a specific location within an area, the southeastern corner.