lady-of-the-night vs Brunfelsia americana

lady-of-the-night and Brunfelsia americana both are nouns.

Word	Noun	Adjective	Verb	Adverb
lady-of-the-night	Yes	No	No	No
Brunfelsia americana	Yes	No	No	No

As nouns, lady-of-the-night and Brunfelsia americana are synonyms defined as:

lady-of-the-night and Brunfelsia americana: West Indian shrub with fragrant showy yellowish-white flowers

lady-of-the-night (noun)	Brunfelsia americana (noun)
West Indian shrub with fragrant showy yellowish-white flowers	West Indian shrub with fragrant showy yellowish-white flowers