toroid vs round shape

toroid and round shape both are nouns.

Word	Noun	Adjective	Verb	Adverb
toroid	Yes	No	No	No
round shape	Yes	No	No	No

As nouns, round shape is a hypernym of toroid; that is, round shape is a word with a broader meaning than toroid:

toroid: a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle
round shape: a shape that is curved and without sharp angles

toroid (noun)	round shape (noun)
a ring-shaped surface generated by rotating a circle around an axis that does not intersect the circle	a shape that is curved and without sharp angles
the doughnut-shaped object enclosed by a torus