rotatory vs rotate

rotatory is an adjective but rotate is not an adjective.

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

rotatory (adjective)	rotate (adjective)
of or relating to or characteristic or causing an axial or orbital turn

rotatory (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