spheroid vs ellipsoid of revolution

spheroid and ellipsoid of revolution both are nouns.

Word	Noun	Adjective	Verb	Adverb
spheroid	Yes	No	No	No
ellipsoid of revolution	Yes	No	No	No

As nouns, spheroid and ellipsoid of revolution are synonyms defined as:

spheroid and ellipsoid of revolution: a shape that is generated by rotating an ellipse around one of its axes

spheroid (noun)	ellipsoid of revolution (noun)
a shape that is generated by rotating an ellipse around one of its axes	a shape that is generated by rotating an ellipse around one of its axes