screen vs cover

screen and cover both are nouns.

Word	Noun	Adjective	Verb	Adverb
screen	Yes	No	Yes	No
cover	Yes	No	Yes	No

As nouns, screen and cover are synonyms defined as:

screen and cover: a covering that serves to conceal or shelter something

Other synonyms of screen include concealment, covert.

screen (noun)	cover (noun)
a protective covering consisting of netting; can be mounted in a frame	the act of concealing the existence of something by obstructing the view of it
a covering that serves to conceal or shelter something	fire that makes it difficult for the enemy to fire on your own individuals or formations
a strainer for separating lumps from powdered material or grading particles	a false identity and background (especially one created for an undercover agent)
partition consisting of a decorative frame or panel that serves to divide a space	a recording of a song that was first recorded or made popular by somebody else
a protective covering that keeps things out or hinders sight	bedding that keeps a person warm in bed
the display that is electronically created on the surface of the large end of a cathode-ray tube	a covering that serves to conceal or shelter something
a white or silvered surface where pictures can be projected for viewing	covering for a hole (especially a hole in the top of a container)
the personnel of the film industry	the protective covering on the front, back, and spine of a book
	a natural object that covers or envelops
	a fixed charge by a restaurant or nightclub over and above the charge for food and drink

screen (verb)	cover (verb)
examine methodically	sit on (eggs)
protect, hide, or conceal from danger or harm	clothe, as if for protection from the elements
prevent from entering	protect by insurance
separate with a riddle, as grain from chaff	act on verbally or in some form of artistic expression
project onto a screen for viewing	be responsible for reporting the details of, as in journalism
examine in order to test suitability	maintain a check on; especially by patrolling
test or examine for the presence of disease or infection	protect or defend (a position in a game)
	hold within range of an aimed firearm
	play a higher card than the one previously played
	be responsible for guarding an opponent in a game
	provide with a covering or cause to be covered
	form a cover over
	copulate with a female, used especially of horses
	cover as if with a shroud
	put something on top of something else
	travel across or pass over
	hide from view or knowledge
	spread over a surface to conceal or protect
	be sufficient to meet, defray, or offset the charge or cost of
	to take an action to protect against future problems
	invest with a large or excessive amount of something
	help out by taking someone's place and temporarily assuming his responsibilities
	provide for
	span an interval of distance, space or time
	include in scope; include as part of something broader; have as one's sphere or territory
	make up for shortcomings or a feeling of inferiority by exaggerating good qualities