genus Citrus vs orange

genus Citrus and orange both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Citrus	Yes	No	No	No
orange	Yes	Yes	No	No

genus Citrus (noun)	orange (noun)
orange, lemon, lime, etc.	orange color or pigment; any of a range of colors between red and yellow
	round yellow to orange fruit of any of several citrus trees
	any citrus tree bearing oranges
	any pigment producing the orange color

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