Oregon cedar vs cedar

Oregon cedar and cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oregon cedar	Yes	No	No	No
cedar	Yes	No	No	No

As nouns, cedar is a hypernym of Oregon cedar; that is, cedar is a word with a broader meaning than Oregon cedar:

Oregon cedar: large timber tree of western North America with trunk diameter to 12 feet and height to 200 feet
cedar: any of numerous trees of the family Cupressaceae that resemble cedars

Other hypernyms of Oregon cedar include cedar tree.

Oregon cedar (noun)	cedar (noun)
large timber tree of western North America with trunk diameter to 12 feet and height to 200 feet	any cedar of the genus Cedrus
	any of numerous trees of the family Cupressaceae that resemble cedars
	durable aromatic wood of any of numerous cedar trees; especially wood of the red cedar often used for cedar chests