book vs cover

book and cover both are nouns.

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

book (noun)	cover (noun)
physical objects consisting of a number of pages bound together	the act of concealing the existence of something by obstructing the view of it
a number of sheets (ticket or stamps etc.) bound together on one edge	fire that makes it difficult for the enemy to fire on your own individuals or formations
a written work or composition that has been published (printed on pages bound together)	a false identity and background (especially one created for an undercover agent)
a written version of a play or other dramatic composition; used in preparing for a performance	a recording of a song that was first recorded or made popular by somebody else
a compilation of the known facts regarding something or someone	bedding that keeps a person warm in bed
a major division of a long written composition	a covering that serves to conceal or shelter something
a collection of rules or prescribed standards on the basis of which decisions are made	covering for a hole (especially a hole in the top of a container)
a collection of playing cards satisfying the rules of a card game	the protective covering on the front, back, and spine of a book
a record in which commercial accounts are recorded	a natural object that covers or envelops
	a fixed charge by a restaurant or nightclub over and above the charge for food and drink

book (verb)	cover (verb)
engage for a performance	sit on (eggs)
record a charge in a police register	clothe, as if for protection from the elements
arrange for and reserve (something for someone else) in advance	protect by insurance
register in a hotel booker	act on verbally or in some form of artistic expression
	be responsible for reporting the details of, as in journalism
	maintain a check on; especially by patrolling
	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