Thuja plicata vs red cedar

Thuja plicata and red cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Thuja plicata	Yes	No	No	No
red cedar	Yes	No	No	No

As nouns, Thuja plicata and red cedar are synonyms defined as:

Thuja plicata and red cedar: large valuable arborvitae of northwestern United States

Other synonyms of Thuja plicata include canoe cedar, western red cedar.

Thuja plicata (noun)	red cedar (noun)
large valuable arborvitae of northwestern United States	tall tree of the Pacific coast of North America having foliage like cypress and cinnamon-red bark
	small juniper found east of Rocky Mountains having a conic crown, brown bark that peels in shreds, and small sharp needles
	large valuable arborvitae of northwestern United States
	fragrant reddish wood of any of various red cedar trees