spread over vs drown

spread over and drown both are verbs.

Word	Noun	Adjective	Verb	Adverb
spread over	No	No	Yes	No
drown	No	No	Yes	No

As verbs, drown is a hyponym of spread over; that is, drown is a word with a more specific, narrower meaning than spread over:

spread over (verb)	drown (verb)
form a cover over	die from being submerged in water, getting water into the lungs, and asphyxiating
	kill by submerging in water
	get rid of as if by submerging
	cover completely or make imperceptible
	be in danger of dying from submersion in a liquid and asphyxiation
	be covered with or submerged in a liquid