sweet unicorn plant vs Proboscidea fragrans

sweet unicorn plant and Proboscidea fragrans both are nouns.

Word	Noun	Adjective	Verb	Adverb
sweet unicorn plant	Yes	No	No	No
Proboscidea fragrans	Yes	No	No	No

As nouns, sweet unicorn plant and Proboscidea fragrans are synonyms defined as:

sweet unicorn plant and Proboscidea fragrans: a herbaceous plant of the genus Proboscidea

Other synonyms of sweet unicorn plant include Martynia fragrans.

sweet unicorn plant (noun)	Proboscidea fragrans (noun)
a herbaceous plant of the genus Proboscidea	a herbaceous plant of the genus Proboscidea