orrisroot vs orris

orrisroot and orris both are nouns.

Word	Noun	Adjective	Verb	Adverb
orrisroot	Yes	No	No	No
orris	Yes	No	No	No

As nouns, orrisroot and orris are synonyms defined as:

orrisroot and orris: fragrant rootstock of various irises especially Florentine iris; used in perfumes and medicines

orrisroot (noun)	orris (noun)
fragrant rootstock of various irises especially Florentine iris; used in perfumes and medicines	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