Nageia vs gymnosperm genus

Nageia and gymnosperm genus both are nouns.

Word	Noun	Adjective	Verb	Adverb
Nageia	Yes	No	No	No
gymnosperm genus	Yes	No	No	No

As nouns, gymnosperm genus is a hypernym of Nageia; that is, gymnosperm genus is a word with a broader meaning than Nageia:

Nageia: small genus of Asian evergreen trees having columnar crowns and distinguished by leaves lacking a midrib; eastern Asia including India and Philippines and New Guinea
gymnosperm genus: a genus of gymnosperms

Nageia (noun)	gymnosperm genus (noun)
small genus of Asian evergreen trees having columnar crowns and distinguished by leaves lacking a midrib; eastern Asia including India and Philippines and New Guinea	a genus of gymnosperms