Iris foetidissima vs roast beef plant

Iris foetidissima and roast beef plant both are nouns.

Word	Noun	Adjective	Verb	Adverb
Iris foetidissima	Yes	No	No	No
roast beef plant	Yes	No	No	No

As nouns, Iris foetidissima and roast beef plant are synonyms defined as:

Iris foetidissima and roast beef plant: iris with purple flowers and foul-smelling leaves; southern and western Europe and North Africa

Other synonyms of Iris foetidissima include gladdon, gladdon iris, stinking gladwyn, stinking iris.

Iris foetidissima (noun)	roast beef plant (noun)
iris with purple flowers and foul-smelling leaves; southern and western Europe and North Africa	iris with purple flowers and foul-smelling leaves; southern and western Europe and North Africa