Is freind is a common or proper noun?

The Word 'friend' is a common noun, a general Word for anyone with whom one has a bond of mutual affection; a Word for any friend of anyone.

A proper noun is the name of a specific person, place, or thing. A proper noun form the common noun 'friend' is the name of a friend.

The Word 'friend' is also a verb meaning to add someone to a list of contacts associated with a social networking website.