nutgrass vs nutsedge

nutgrass and nutsedge both are nouns.

Word	Noun	Adjective	Verb	Adverb
nutgrass	Yes	No	No	No
nutsedge	Yes	No	No	No

As nouns, nutgrass and nutsedge are synonyms defined as:

nutgrass and nutsedge: a widely distributed perennial sedge having small edible nutlike tubers

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

nutgrass (noun)	nutsedge (noun)
a widely distributed perennial sedge having small edible nutlike tubers	a widely distributed perennial sedge having small edible nutlike tubers