boysenberry bush vs boysenberry

boysenberry bush and boysenberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
boysenberry bush	Yes	No	No	No
boysenberry	Yes	No	No	No

As nouns, boysenberry bush and boysenberry are synonyms defined as:

boysenberry bush and boysenberry: cultivated hybrid bramble of California having large dark wine-red fruit with a flavor resembling raspberries

boysenberry bush (noun)	boysenberry (noun)
cultivated hybrid bramble of California having large dark wine-red fruit with a flavor resembling raspberries	large raspberry-flavored fruit; cross between blackberries and raspberries
	cultivated hybrid bramble of California having large dark wine-red fruit with a flavor resembling raspberries