ambrosia vs genus Ambrosia

ambrosia and genus Ambrosia both are nouns.

Word	Noun	Adjective	Verb	Adverb
ambrosia	Yes	No	No	No
genus Ambrosia	Yes	No	No	No

ambrosia (noun)	genus Ambrosia (noun)
(classical mythology) the food and drink of the gods; mortals who ate it became immortal	comprising the ragweeds; in some classification considered the type genus of a separate family Ambrosiaceae
fruit dessert made of oranges and bananas with shredded coconut
any of numerous chiefly North American weedy plants constituting the genus Ambrosia that produce highly allergenic pollen responsible for much hay fever and asthma
a mixture of nectar and pollen prepared by worker bees and fed to larvae