southern white cedar vs coast white cedar

southern white cedar and coast white cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
southern white cedar	Yes	No	No	No
coast white cedar	Yes	No	No	No

As nouns, southern white cedar and coast white cedar are synonyms defined as:

southern white cedar and coast white cedar: slow-growing medium-sized cedar of east coast of the United States; resembles American arborvitae

Other synonyms of southern white cedar include Atlantic white cedar, Chamaecyparis thyoides, white cedar, white cypress.

southern white cedar (noun)	coast white cedar (noun)
slow-growing medium-sized cedar of east coast of the United States; resembles American arborvitae	slow-growing medium-sized cedar of east coast of the United States; resembles American arborvitae