atomize vs spray

atomize is not a noun while spray is a noun.

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

atomize (noun)	spray (noun)
	a pesticide in suspension or solution; intended for spraying
	a quantity of small objects flying through the air
	flower arrangement consisting of a single branch or shoot bearing flowers and foliage
	a dispenser that turns a liquid (such as perfume) into a fine mist
	water in small drops in the atmosphere; blown from waves or thrown up by a waterfall
	a jet of vapor

atomize (verb)	spray (verb)
spray very finely	be discharged in sprays of liquid
strike at with firepower or bombs	scatter in a mass or jet of droplets
break up into small particles	cover by spraying with a liquid