Is covered a proper noun or a noun?

Answer 1

The word 'covered' is NOT a noun.

The word 'covered' is a verb, the past participle, past tense of the verb to cover.

The past participle of the verb also functions as an adjective.

The word 'cover' is both a verb and a noun.

The noun 'cover' is a common noun, a general word for something that is put over something else (a lid, a blanket, a binding, etc.); a shelter or protection; vegetation growing across the surface of the ground; something that conceals; a layer of clouds in the sky; a word for any cover of any kind.