publisher vs newspaper

publisher and newspaper both are nouns.

Word	Noun	Adjective	Verb	Adverb
publisher	Yes	No	No	No
newspaper	Yes	No	No	No

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

Other hyponyms of publisher include newspaper publisher, paper, magazine, magazine publisher.

publisher (noun)	newspaper (noun)
a firm in the publishing business	the physical object that is the product of a newspaper publisher
a person engaged in publishing periodicals or books or music	a daily or weekly publication on folded sheets; contains news and articles and advertisements
the proprietor of a newspaper	a business firm that publishes newspapers
	cheap paper made from wood pulp and used for printing newspapers