orris vs Iris florentina

orris and Iris florentina both are nouns.

Word	Noun	Adjective	Verb	Adverb
orris	Yes	No	No	No
Iris florentina	Yes	No	No	No

As nouns, orris and Iris florentina are synonyms defined as:

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

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

orris (noun)	Iris florentina (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