orbital rotation vs rotation

orbital rotation and rotation both are nouns.

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

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

Other hypernyms of orbital rotation include gyration, revolution.

orbital rotation (noun)	rotation (noun)
motion of an object in an orbit around a fixed point	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