witch grass vs witchgrass

witch grass and witchgrass both are nouns.

Word	Noun	Adjective	Verb	Adverb
witch grass	Yes	No	No	No
witchgrass	Yes	No	No	No

As nouns, witch grass and witchgrass are synonyms defined as:

witch grass and witchgrass: North American grass with slender brushy panicles; often a weed on cultivated land

Other synonyms of witch grass include old witch grass, old witchgrass, Panicum capillare, tumble grass.

As nouns, witch grass and witchgrass are synonyms defined as:

witch grass and witchgrass: European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed

Other synonyms of witch grass include Agropyron repens, couch grass, dog grass, quack grass, quackgrass, quick grass.

witch grass (noun)	witchgrass (noun)
North American grass with slender brushy panicles; often a weed on cultivated land	North American grass with slender brushy panicles; often a weed on cultivated land
European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed	European grass spreading rapidly by creeping rhizomes; naturalized in North America as a weed