swim vs floating

swim and floating both are nouns.

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

As nouns, floating is a hyponym of swim; that is, floating is a word with a more specific, narrower meaning than swim:

Other hyponyms of swim include bathe, skinny-dip, dip, plunge, dive, diving, natation, skin-dive, skin diving.

swim (noun)	floating (noun)
the act of swimming	the act of someone who floats on the water

swim (adjective)	floating (adjective)
	borne up by or suspended in a liquid
	inclined to move or be moved about
	not definitely committed to a party or policy
	(of a part of the body) not firmly connected; movable or out of normal position
	continually changing especially as from one abode or occupation to another

swim (verb)	floating (verb)
travel through water
be afloat either on or below a liquid surface and not sink to the bottom
move as if gliding through water
be covered with or submerged in a liquid
be dizzy or giddy