toroid vs doughnut

toroid and doughnut both are nouns.

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

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

Other hyponyms of toroid include anchor ring, annulus, halo, ring.

toroid (noun)	doughnut (noun)
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle	a small ring-shaped friedcake
the doughnut-shaped object enclosed by a torus	a toroidal shape