yellow cypress vs cedar

yellow cypress and cedar both are nouns.

Word	Noun	Adjective	Verb	Adverb
yellow cypress	Yes	No	No	No
cedar	Yes	No	No	No

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

yellow cypress: tall evergreen of the Pacific coast of North America often cultivated for ornament
cedar: any of numerous trees of the family Cupressaceae that resemble cedars

Other hypernyms of yellow cypress include cedar tree.

yellow cypress (noun)	cedar (noun)
tall evergreen of the Pacific coast of North America often cultivated for ornament	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