How to Say "western part" in Spanish
The Spanish word for “western part” is “occidente” — A2 level. This is a very common word in everyday Spanish.

Examples
El sol se pone por el occidente.
The sun sets in the west.
Mi familia vive en el occidente del país.
My family lives in the western part of the country.
Viajaremos hacia el occidente durante tres días.
We will travel toward the west for three days.
Always Masculine
Directions in Spanish are always masculine. You should always use 'el' before 'occidente'.
Occidente vs. Oeste
While both mean 'west', 'oeste' is used more for navigation (like on a compass), while 'occidente' is used more for regions or formal geography.
The 'Accidente' Confusion
Mistake: “Tuve un occidente de coche.”
Correction: Tuve un accidente de coche. (Don't confuse 'occidente' (west) with 'accidente' (accident)—they sound similar but are very different!)
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