Cyperus rotundus vs nut sedge

Cyperus rotundus and nut sedge both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cyperus rotundus	Yes	No	No	No
nut sedge	Yes	No	No	No

As nouns, Cyperus rotundus and nut sedge are synonyms defined as:

Cyperus rotundus and nut sedge: a widely distributed perennial sedge having small edible nutlike tubers

Other synonyms of Cyperus rotundus include nut grass, nutgrass, nutsedge.

Cyperus rotundus (noun)	nut sedge (noun)
a widely distributed perennial sedge having small edible nutlike tubers	a widely distributed perennial sedge having small edible nutlike tubers