Cedrus libani vs true cedar

Cedrus libani and true cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cedrus libani	Yes	No	No	No
true cedar	Yes	No	No	No

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

Cedrus libani: cedar of Lebanon and northwestern Syria that attains great age and height
true cedar: any cedar of the genus Cedrus

Other hypernyms of Cedrus libani include cedar, cedar tree.

Cedrus libani (noun)	true cedar (noun)
cedar of Lebanon and northwestern Syria that attains great age and height	any cedar of the genus Cedrus