torus vs toroid

torus and toroid both are nouns.

Word	Noun	Adjective	Verb	Adverb
torus	Yes	No	No	No
toroid	Yes	No	No	No

As nouns, torus and toroid are synonyms defined as:

torus and toroid: a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle

torus (noun)	toroid (noun)
commonly the lowest molding at the base of a column	a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle	the doughnut-shaped object enclosed by a torus