rotary motion vs whirl

rotary motion and whirl both are nouns.

Word	Noun	Adjective	Verb	Adverb
rotary motion	Yes	No	No	No
whirl	Yes	No	Yes	No

As nouns, whirl is a hyponym of rotary motion; that is, whirl is a word with a more specific, narrower meaning than rotary motion:

rotary motion (noun)	whirl (noun)
the act of rotating as if on an axis	a usually brief attempt
	the act of rotating rapidly
	confused movement
	the shape of something rotating rapidly

rotary motion (verb)	whirl (verb)
	flow in a circular current, of liquids
	turn in a twisting or spinning motion
	cause to spin
	fly around
	revolve quickly and repeatedly around one's own axis