orange vs genus Citrus

orange and genus Citrus both are nouns.

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

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

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