sweet orange vs orange

sweet orange and orange both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet orange	Yes	No	No	No
orange	Yes	Yes	No	No

As nouns, orange is a hypernym of sweet orange; that is, orange is a word with a broader meaning than sweet orange:

As nouns, orange is a hypernym of sweet orange; that is, orange is a word with a broader meaning than sweet orange:

sweet orange: probably native to southern China; widely cultivated as source of table and juice oranges
orange: any citrus tree bearing oranges

Other hypernyms of sweet orange include orange tree.

sweet orange (noun)	orange (noun)
orange with sweet juicy pulp; often has a thin skin	orange color or pigment; any of a range of colors between red and yellow
probably native to southern China; widely cultivated as source of table and juice oranges	round yellow to orange fruit of any of several citrus trees
	any citrus tree bearing oranges
	any pigment producing the orange color

sweet orange (adjective)	orange (adjective)
	of the color between red and yellow; similar to the color of a ripe orange