saccharose vs galactose

saccharose and galactose both are nouns.

Word	Noun	Adjective	Verb	Adverb
saccharose	Yes	No	No	No
galactose	Yes	No	No	No

As nouns, galactose is a hyponym of saccharose; that is, galactose is a word with a more specific, narrower meaning than saccharose:

saccharose: a complex carbohydrate found in many plants and used as a sweetening agent
galactose: a simple sugar found in lactose

Other hyponyms of saccharose include brain sugar.

saccharose (noun)	galactose (noun)
a complex carbohydrate found in many plants and used as a sweetening agent	a simple sugar found in lactose