flowering raspberry vs purple-flowering raspberry

flowering raspberry and purple-flowering raspberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
flowering raspberry	Yes	No	No	No
purple-flowering raspberry	Yes	No	No	No

As nouns, flowering raspberry and purple-flowering raspberry are synonyms defined as:

flowering raspberry and purple-flowering raspberry: shrubby raspberry of eastern North America having showy rose to purplish flowers and red or orange thimble-shaped fruit

Other synonyms of flowering raspberry include Rubus odoratus, thimbleberry.

flowering raspberry (noun)	purple-flowering raspberry (noun)
shrubby raspberry of eastern North America having showy rose to purplish flowers and red or orange thimble-shaped fruit	shrubby raspberry of eastern North America having showy rose to purplish flowers and red or orange thimble-shaped fruit