gladdon iris vs Iris foetidissima

gladdon iris and Iris foetidissima both are nouns.

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

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

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

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

gladdon 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