orris vs bearded iris

orris and bearded iris both are nouns.

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

As nouns, bearded iris is a hypernym of orris; that is, bearded iris is a word with a broader meaning than orris:

orris: German iris having large white flowers with lavender-tinged falls and a fragrant rhizome
bearded iris: any of numerous wild or cultivated irises with hairlike structures on the falls (the drooping sepals)

orris (noun)	bearded iris (noun)
German iris having large white flowers with lavender-tinged falls and a fragrant rhizome	any of numerous wild or cultivated irises with hairlike structures on the falls (the drooping sepals)
fragrant rootstock of various irises especially Florentine iris; used in perfumes and medicines