There are jellies and jams which are made from sugar, pectin and fruit.
Jell-O is a brand name here and it is not a jelly, but a sugar treat that sometimes contains real fruit and is made from beef gelatin.
Translation for you John into DownUnder Speak.....in Australia and New Zealand what you call jelly we call jam. What you call Jell-O we call Jelly...the sugar and gelatine dessert.