The noun Alps is a proper noun, the name of a specific group of mountains.
The common nouns for the word Alps are mountains or mountain range.
The word 'alpine' (or Alpine) is the adjective form of the proper noun Alps (The Alps is a mountain range in Europe).The adjective 'alpine' describes a noun as of or from The Alps region.
Common
Common noun
common
Pea is a common noun, and peas is the plural...still a common noun.
valleys
A common noun.
Most definitely a common noun.
Camel is a common noun.
Th word tail is a common noun because the first letter of a proper noun is capitalized.