ovate vs oval

ovate is not a noun while oval is a noun.

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

As adjectives, ovate and oval are synonyms defined as:

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

ovate (noun)	oval (noun)
	a closed plane curve resulting from the intersection of a circular cone and a plane cutting completely through it

ovate (adjective)	oval (adjective)
rounded like an egg	rounded like an egg
of a leaf shape; egg-shaped with the broader end at the base