dewberry vs dewberry bush

dewberry and dewberry bush both are nouns.

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

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

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

Other synonyms of dewberry include running blackberry.

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