stinking iris vs Iris foetidissima

stinking iris and Iris foetidissima both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinking iris	Yes	No	No	No
Iris foetidissima	Yes	No	No	No

As nouns, stinking iris and Iris foetidissima are synonyms defined as:

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

Other synonyms of stinking iris include gladdon, gladdon iris, roast beef plant, stinking gladwyn.

stinking iris (noun)	Iris foetidissima (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