rotation vs feathering

rotation and feathering both are nouns.

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

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

rotation (noun)	feathering (noun)
the act of rotating as if on an axis	turning an oar parallel to the water between pulls
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