oval vs ovoid

oval and ovoid both are nouns.

Word	Noun	Adjective	Verb	Adverb
oval	Yes	Yes	No	No
ovoid	Yes	Yes	No	No

As adjectives, oval and ovoid are synonyms defined as:

Other synonyms of oval include egg-shaped, elliptic, elliptical, oval-shaped, ovate, oviform, prolate.

oval (noun)	ovoid (noun)
a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it	an egg-shaped object

oval (adjective)	ovoid (adjective)
rounded like an egg	rounded like an egg