Libocedrus bidwillii vs cedar

Libocedrus bidwillii and cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Libocedrus bidwillii	Yes	No	No	No
cedar	Yes	No	No	No

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

Libocedrus bidwillii: evergreen tree of New Zealand resembling the kawaka
cedar: any of numerous trees of the family Cupressaceae that resemble cedars

Other hypernyms of Libocedrus bidwillii include cedar tree.

Libocedrus bidwillii (noun)	cedar (noun)
evergreen tree of New Zealand resembling the kawaka	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