Mountain
Use for a 'mountain range' or a chain of mountains.
Commonly used for a 'hill' or a smaller, often standalone mountain.
Refers specifically to the 'peak' or the highest point of a mountain.
Use for a very large system of mountain ranges, like the Andes.
The mountain is very high.
We like to walk in the hills.
The Orizaba Peak is in Mexico.
The Sierra Madre is an important mountain range.
The word 'montaña' is the universal and most understood term for 'mountain' across all Spanish-speaking countries.
The word 'cerro' is extremely common throughout Latin America (e.g., Mexico, Colombia, Argentina) to refer to hills or smaller, less rugged mountains. In some local contexts, it can be used interchangeably with 'montaña'.
Usage is consistent with Latin America. 'Montaña' is standard. 'Sierra' is very common for ranges, as in 'Sierra Nevada'.
Saying 'montana' instead of 'montaña'. — The letter 'ñ' is a distinct letter in Spanish, not just an 'n' with a mark. It has a 'ny' sound, like the 'ni' in 'onion'. Saying 'montana' (mon-TAH-nah) is incorrect and can be confusing.
Using the wrong gender: 'el montaña'. — 'Montaña' is a feminine noun. Always use the feminine article 'la' or 'una'. The correct form is 'la montaña' (the mountain) or 'una montaña' (a mountain).
Using 'montaña' for a mountain range. — While 'montañas' (plural) can mean 'mountains', for a specific range or chain, it is more accurate to use 'sierra' or 'cordillera'. For example, 'la Cordillera de los Andes', not 'las Montañas de los Andes'.