swim vs drown

swim is a noun but drown is not a noun.

Word	Noun	Adjective	Verb	Adverb
swim	Yes	No	Yes	No
drown	No	No	Yes	No

As verbs, swim and drown are synonyms defined as:

swim (noun)	drown (noun)
the act of swimming

swim (verb)	drown (verb)
travel through water	die from being submerged in water, getting water into the lungs, and asphyxiating
be afloat either on or below a liquid surface and not sink to the bottom	kill by submerging in water
move as if gliding through water	get rid of as if by submerging
be covered with or submerged in a liquid	cover completely or make imperceptible
be dizzy or giddy	be in danger of dying from submersion in a liquid and asphyxiation
	be covered with or submerged in a liquid