papers vs copyright

papers and copyright both are nouns.

Word	Noun	Adjective	Verb	Adverb
papers	Yes	No	No	No
copyright	Yes	No	Yes	No

As nouns, copyright is a hyponym of papers; that is, copyright is a word with a more specific, narrower meaning than papers:

papers: writing that provides information (especially information of an official nature)
copyright: a document granting exclusive right to publish and sell literary or musical or artistic work

papers (noun)	copyright (noun)
writing that provides information (especially information of an official nature)	a document granting exclusive right to publish and sell literary or musical or artistic work

papers (verb)	copyright (verb)
	secure a copyright on a written work