running blackberry vs dewberry

running blackberry and dewberry both are nouns.

Word	Noun	Adjective	Verb	Adverb
running blackberry	Yes	No	No	No
dewberry	Yes	No	No	No

As nouns, running blackberry and dewberry are synonyms defined as:

running blackberry and dewberry: any of several trailing blackberry brambles especially of North America

Other synonyms of running blackberry include dewberry bush.

running blackberry (noun)	dewberry (noun)
any of several trailing blackberry brambles especially of North America	blackberry-like fruits of any of several trailing blackberry bushes
	any of several trailing blackberry brambles especially of North America