Is Nature a Proper Noun or a Common Noun?

Answer 1

The noun 'nature' is a common noun, a general word for the fundamental qualities of a person or thing; a general word for the physical world and its processes.

A proper noun the name of a specific person, place, thing or a title, such as The Nature Conservancy or 'The Nature of the Crime' by Joseph Conrad.

Answer 2

Depends on how you use it. You could be referencing Mother Nature as a proper noun. Or you could reference the scene, "We stopped to admire the nature."