grape sugar vs dextrose

grape sugar and dextrose both are nouns.

Word	Noun	Adjective	Verb	Adverb
grape sugar	Yes	No	No	No
dextrose	Yes	No	No	No

As nouns, grape sugar and dextrose are synonyms defined as:

grape sugar and dextrose: an isomer of glucose that is found in honey and sweet fruits

Other synonyms of grape sugar include dextroglucose.

grape sugar (noun)	dextrose (noun)
an isomer of glucose that is found in honey and sweet fruits	an isomer of glucose that is found in honey and sweet fruits