fruit sugar vs levulose

fruit sugar and levulose both are nouns.

Word	Noun	Adjective	Verb	Adverb
fruit sugar	Yes	No	No	No
levulose	Yes	No	No	No

As nouns, fruit sugar and levulose are synonyms defined as:

fruit sugar and levulose: a simple sugar found in honey and in many ripe fruits

Other synonyms of fruit sugar include fructose, laevulose.

fruit sugar (noun)	levulose (noun)
a simple sugar found in honey and in many ripe fruits	a simple sugar found in honey and in many ripe fruits