Is kids a proper noun or common noun or collective noun?

The noun 'kids' is plural noun form for the singular 'kid', a Word for a child or a young goat. The Word kid is a common noun, a Word for any kid.

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

• "Diary of a Wimpy Kid" by Jeff Kinney
• KidsStreet Learning Center (recreational center), Needham Heights, MA

A collective noun is a Word for a group of people or things; for example:

• (children) a cacophony of kids
• (goats) a herd of goats, a tribe of goats, a trip of goats

The Word 'kids' is also the third person, present, singular of the verb to kid (kids, kidding, kidded).

• My boss often kids me that I know more about his business than he does.