Cedrus atlantica vs true cedar

Cedrus atlantica and true cedar both are nouns.

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

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

Cedrus atlantica: tall Algerian evergreen of Atlas mountains with blue-green leaves; widely planted as an ornamental
true cedar: any cedar of the genus Cedrus

Other hypernyms of Cedrus atlantica include cedar, cedar tree.

Cedrus atlantica (noun)	true cedar (noun)
tall Algerian evergreen of Atlas mountains with blue-green leaves; widely planted as an ornamental	any cedar of the genus Cedrus