oxeye vs heliopsis

oxeye and heliopsis both are nouns.

Word	Noun	Adjective	Verb	Adverb
oxeye	Yes	No	No	No
heliopsis	Yes	No	No	No

As nouns, oxeye and heliopsis are synonyms defined as:

oxeye and heliopsis: any North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowers

oxeye (noun)	heliopsis (noun)
an oval or round dormer window	any North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowers
Eurasian perennial herbs having daisylike flowers with yellow rays and dark centers
any North American shrubby perennial herb of the genus Heliopsis having large yellow daisylike flowers