paper vs sheet

paper and sheet both are nouns.

Word	Noun	Adjective	Verb	Adverb
paper	Yes	No	Yes	No
sheet	Yes	No	Yes	No

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

paper: a daily or weekly publication on folded sheets; contains news and articles and advertisements
sheet: newspaper with half-size pages

Other hyponyms of paper include daily, gazette, school newspaper, school paper, rag, tabloid.

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

paper: a material made of cellulose pulp derived mainly from wood or rags or certain grasses
sheet: paper used for writing or printing

paper (noun)	sheet (noun)
the physical object that is the product of a newspaper publisher	bed linen consisting of a large rectangular piece of cotton or linen cloth; used in pairs
a medium for written communication	(nautical) a line (rope or chain) that regulates the angle at which a sail is set in relation to the wind
an essay (especially one written as an assignment)	a flat artifact that is thin relative to its length and width
a scholarly article describing the results of observations or stating hypotheses	a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel
a daily or weekly publication on folded sheets; contains news and articles and advertisements	paper used for writing or printing
a business firm that publishes newspapers	newspaper with half-size pages
a material made of cellulose pulp derived mainly from wood or rags or certain grasses	any broad thin expanse or surface
	(mathematics) an unbounded two-dimensional shape

paper (verb)	sheet (verb)
cover with paper	cover with a sheet, as if by wrapping
cover with wallpaper	come down as if in sheets