genus Erigeron vs Erigeron

genus Erigeron and Erigeron both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Erigeron	Yes	No	No	No
Erigeron	Yes	No	No	No

As nouns, genus Erigeron and Erigeron are synonyms defined as:

genus Erigeron and Erigeron: cosmopolitan genus of usually perennial herbs with flowers that resemble asters; leaves occasionally (especially formerly) used medicinally

genus Erigeron (noun)	Erigeron (noun)
cosmopolitan genus of usually perennial herbs with flowers that resemble asters; leaves occasionally (especially formerly) used medicinally	cosmopolitan genus of usually perennial herbs with flowers that resemble asters; leaves occasionally (especially formerly) used medicinally