toroid vs anchor ring

toroid and anchor ring both are nouns.

Word	Noun	Adjective	Verb	Adverb
toroid	Yes	No	No	No
anchor ring	Yes	No	No	No

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

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

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