rotation vs supination

rotation and supination both are nouns.

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

As nouns, supination is a hyponym of rotation; that is, supination is a word with a more specific, narrower meaning than rotation:

rotation: the act of rotating as if on an axis
supination: rotation of the hands and forearms so that the palms face upward

rotation (noun)	supination (noun)
the act of rotating as if on an axis	rotation of the hands and forearms so that the palms face upward
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