spray vs cover

spray and cover both are nouns.

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

As verbs, cover is a hypernym of spray; that is, cover is a word with a broader meaning than spray:

spray (noun)	cover (noun)
a dispenser that turns a liquid (such as perfume) into a fine mist	the act of concealing the existence of something by obstructing the view of it
flower arrangement consisting of a single branch or shoot bearing flowers and foliage	fire that makes it difficult for the enemy to fire on your own individuals or formations
a jet of vapor	a false identity and background (especially one created for an undercover agent)
a quantity of small objects flying through the air	a recording of a song that was first recorded or made popular by somebody else
water in small drops in the atmosphere; blown from waves or thrown up by a waterfall	bedding that keeps a person warm in bed
a pesticide in suspension or solution; intended for spraying	a covering that serves to conceal or shelter something
	covering for a hole (especially a hole in the top of a container)
	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

spray (verb)	cover (verb)
scatter in a mass or jet of droplets	sit on (eggs)
be discharged in sprays of liquid	clothe, as if for protection from the elements
cover by spraying with a liquid	protect by insurance
	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