whitecup vs Nierembergia rivularis

whitecup and Nierembergia rivularis both are nouns.

Word	Noun	Adjective	Verb	Adverb
whitecup	Yes	No	No	No
Nierembergia rivularis	Yes	No	No	No

As nouns, whitecup and Nierembergia rivularis are synonyms defined as:

whitecup and Nierembergia rivularis: prostrate woody South American herb with white tubular flowers often tinged with blue or rose

Other synonyms of whitecup include Nierembergia repens.

whitecup (noun)	Nierembergia rivularis (noun)
prostrate woody South American herb with white tubular flowers often tinged with blue or rose	prostrate woody South American herb with white tubular flowers often tinged with blue or rose