Thuja occidentalis vs white cedar

Thuja occidentalis and white cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Thuja occidentalis	Yes	No	No	No
white cedar	Yes	No	No	No

As nouns, Thuja occidentalis and white cedar are synonyms defined as:

Thuja occidentalis and white cedar: small evergreen of eastern North America having tiny scalelike leaves on flattened branchlets

Other synonyms of Thuja occidentalis include American arborvitae, northern white cedar.

Thuja occidentalis (noun)	white cedar (noun)
small evergreen of eastern North America having tiny scalelike leaves on flattened branchlets	slow-growing medium-sized cedar of east coast of the United States; resembles American arborvitae
	small evergreen of eastern North America having tiny scalelike leaves on flattened branchlets