Nouns

(n)rotation, rotary motionthe act of rotating as if on an axis“the rotation of the dancer kept time with the music”
(n)rotation(mathematics) a transformation in which the coordinate axes are rotated by a fixed angle about the origin
(n)rotation, revolution, gyrationa single complete turn (axial or orbital)“the plane made three rotations before it crashed”, “the revolution of the earth about the sun takes one year”
(n)rotationa planned recurrent sequence (of crops or personnel etc.)“crop rotation makes a balanced demand on the fertility of the soil”, “the manager had only four starting pitchers in his rotation”