sierra sierra: Sierra Nevada is a mountain range in south-eastern Spain, near Granada.

massif /mæsˈiːf, ˈmæsiːf/ macizo: The Massif Central is an upland area in south-central France.

mount monte [used before a proper noun]: Mount Everest ^ Mount Fuji is the highest mountain in Japan.

(mountain) range cordillera: a range of mountains

peak pico snow-capped mountain peaks picos nevados: This is one of the highest peaks in the country.

pass puerto, paso: The mountain pass had been closed. ^ Yellowhead Pass