shell vs cover

shell and cover both are nouns.

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

As nouns, cover is a hypernym of shell; that is, cover is a word with a broader meaning than shell:

Other hypernyms of shell include covering, natural covering.

As nouns, cover is a hypernym of shell; that is, cover is a word with a broader meaning than shell:

Other hypernyms of shell include covering, natural covering.

As nouns, cover is a hypernym of shell; that is, cover is a word with a broader meaning than shell:

Other hypernyms of shell include covering, natural covering.

shell (noun)	cover (noun)
the hard largely calcareous covering of a mollusc or a brachiopod	the act of concealing the existence of something by obstructing the view of it
hard outer covering or case of certain organisms such as arthropods and turtles	fire that makes it difficult for the enemy to fire on your own individuals or formations
ammunition consisting of a cylindrical metal casing containing an explosive charge and a projectile; fired from a large gun	a false identity and background (especially one created for an undercover agent)
a metal sheathing of uniform thickness (such as the shield attached to an artillery piece to protect the gunners)	a recording of a song that was first recorded or made popular by somebody else
the housing or outer covering of something	bedding that keeps a person warm in bed
a very light narrow racing boat	a covering that serves to conceal or shelter something
a rigid covering that envelops an object	covering for a hole (especially a hole in the top of a container)
the exterior covering of a bird's egg	the protective covering on the front, back, and spine of a book
the hard usually fibrous outer layer of some fruits especially nuts	a natural object that covers or envelops
the material that forms the hard outer covering of many animals	a fixed charge by a restaurant or nightclub over and above the charge for food and drink

shell (verb)	cover (verb)
remove from its shell or outer covering	sit on (eggs)
remove the husks from	clothe, as if for protection from the elements
use explosives on	protect by insurance
come out better in a competition, race, or conflict	act on verbally or in some form of artistic expression
hit the pitches of hard and regularly	be responsible for reporting the details of, as in journalism
look for and collect shells by the seashore	maintain a check on; especially by patrolling
fall out of the pod or husk	protect or defend (a position in a game)
create by using explosives	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