nut sedge vs nutgrass

nut sedge and nutgrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
nut sedge	Yes	No	No	No
nutgrass	Yes	No	No	No

As nouns, nut sedge and nutgrass are synonyms defined as:

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

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

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