nut sedge vs nutsedge

nut sedge and nutsedge both are nouns.

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

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

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

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

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