twirl vs rotation

twirl and rotation both are nouns.

Word	Noun	Adjective	Verb	Adverb
twirl	Yes	No	Yes	No
rotation	Yes	No	No	No

As nouns, rotation is a hypernym of twirl; that is, rotation is a word with a broader meaning than twirl:

Other hypernyms of twirl include rotary motion.

twirl (noun)	rotation (noun)
the act of rotating rapidly	the act of rotating as if on an axis
a sharp bend in a line produced when a line having a loop is pulled tight	a planned recurrent sequence (of crops or personnel etc.)
	a single complete turn (axial or orbital)
	(mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin

twirl (verb)	rotation (verb)
turn in a twisting or spinning motion
cause to spin