silky dogwood vs Cornus amomum

silky dogwood and Cornus amomum both are nouns.

Word	Noun	Adjective	Verb	Adverb
silky dogwood	Yes	No	No	No
Cornus amomum	Yes	No	No	No

As nouns, silky dogwood and Cornus amomum are synonyms defined as:

silky dogwood and Cornus amomum: shrub of eastern North America having purplish stems and blue fruit

Other synonyms of silky dogwood include silky cornel.

silky dogwood (noun)	Cornus amomum (noun)
shrub of eastern North America closely resembling silky cornel	shrub of eastern North America having purplish stems and blue fruit
shrub of eastern North America having purplish stems and blue fruit