ground-berry vs groundberry

ground-berry and groundberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
ground-berry	Yes	No	No	No
groundberry	Yes	No	No	No

As nouns, ground-berry and groundberry are synonyms defined as:

ground-berry and groundberry: creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil

As nouns, ground-berry and groundberry are synonyms defined as:

ground-berry and groundberry: small prostrate or ascending shrub having scarlet flowers and succulent fruit resembling cranberries; sometimes placed in genus Styphelia

Other synonyms of ground-berry include Astroloma humifusum, cranberry heath, native cranberry, Styphelia humifusum.

ground-berry (noun)	groundberry (noun)
creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil	creeping shrub of eastern North America having white bell-shaped flowers followed by spicy red berrylike fruit and shiny aromatic leaves that yield wintergreen oil
small prostrate or ascending shrub having scarlet flowers and succulent fruit resembling cranberries; sometimes placed in genus Styphelia	small prostrate or ascending shrub having scarlet flowers and succulent fruit resembling cranberries; sometimes placed in genus Styphelia