jello vs Jell-O

jello and Jell-O both are nouns.

Word	Noun	Adjective	Verb	Adverb
jello	Yes	No	No	No
Jell-O	Yes	No	No	No

As nouns, jello and Jell-O are synonyms defined as:

jello and Jell-O: fruit-flavored dessert (trade mark Jell-O) made from a commercially prepared gelatin powder

jello (noun)	Jell-O (noun)
fruit-flavored dessert (trade mark Jell-O) made from a commercially prepared gelatin powder	fruit-flavored dessert (trade mark Jell-O) made from a commercially prepared gelatin powder