axis vs axis of rotation

axis and axis of rotation both are nouns.

Word	Noun	Adjective	Verb	Adverb
axis	Yes	No	No	No
axis of rotation	Yes	No	No	No

As nouns, axis and axis of rotation are synonyms defined as:

axis (noun)	axis of rotation (noun)
the center around which something rotates	the center around which something rotates
the 2nd cervical vertebra; serves as a pivot for turning the head
a straight line through a body or figure that satisfies certain conditions
a group of countries in special alliance
the main stem or central part about which plant organs or plant parts such as branches are arranged