orris vs Florentine iris

orris and Florentine iris both are nouns.

Word	Noun	Adjective	Verb	Adverb
orris	Yes	No	No	No
Florentine iris	Yes	No	No	No

As nouns, orris and Florentine iris are synonyms defined as:

orris and Florentine iris: German iris having large white flowers with lavender-tinged falls and a fragrant rhizome

Other synonyms of orris include Iris florentina, Iris germanica florentina.

orris (noun)	Florentine iris (noun)
German iris having large white flowers with lavender-tinged falls and a fragrant rhizome	German iris having large white flowers with lavender-tinged falls and a fragrant rhizome
fragrant rootstock of various irises especially Florentine iris; used in perfumes and medicines