purple ground cherry vs cape gooseberry

purple ground cherry and cape gooseberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
purple ground cherry	Yes	No	No	No
cape gooseberry	Yes	No	No	No

As nouns, purple ground cherry and cape gooseberry are synonyms defined as:

purple ground cherry and cape gooseberry: annual of tropical South America having edible purple fruits

Other synonyms of purple ground cherry include Physalis peruviana.

purple ground cherry (noun)	cape gooseberry (noun)
annual of tropical South America having edible purple fruits	annual of tropical South America having edible purple fruits
Mexican annual naturalized in eastern North America having yellow to purple edible fruit resembling small tomatoes