This is the 2627th most frequent Polish word.
zachodniego
"Zachodniego" means "of the western" or "western" (possessive/genitive form).
In this sentence, 'zachodniego' is used as an adjective describing the noun 'window', specifying its location as related to the west.
Widok z zachodniego okna jest piękny.
The view from the western window is beautiful.
Here, 'zachodniego' is an adjective modifying 'wybrzeża' (coast), indicating its geographical position.
Podróżowaliśmy do zachodniego wybrzeża Polski.
We traveled to the western coast of Poland.
In this example, 'zachodniego' serves as an adjective qualifying 'świata' (world), denoting cultural or geographical attributes linked to the west.