ellipsoid of revolution vs spheroid

ellipsoid of revolution and spheroid both are nouns.

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

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

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

ellipsoid of revolution (noun)	spheroid (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