Is olives proper noun or common noun?

The noun 'olives' (the plural form of the noun olive) is a common noun, a general term for a type of small, pitted fruit or a color.

A proper noun is the name of a specific person, place, or thing; for example:

• Mezzetta Garlic Stuffed Olives
• Three Olives Italian Restaurant, Ballston Spa, NY
• "Olives", a novel by Alexander McNabb