rotation vs rotate

rotation is a noun but rotate is not a noun.

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

rotation (noun)	rotate (noun)
the act of rotating as if on an axis
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

rotation (verb)	rotate (verb)
	plant or grow in a fixed cyclic order of succession
	perform a job or duty on a rotating basis
	cause to turn on an axis or center
	turn on or around an axis or a center
	turn outward
	exchange on a regular basis