stinking gladwyn vs gladdon iris

stinking gladwyn and gladdon iris both are nouns.

Word	Noun	Adjective	Verb	Adverb
stinking gladwyn	Yes	No	No	No
gladdon iris	Yes	No	No	No

As nouns, stinking gladwyn and gladdon iris are synonyms defined as:

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

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

stinking gladwyn (noun)	gladdon iris (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