genus Picea vs gymnosperm genus

genus Picea and gymnosperm genus both are nouns.

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

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

genus Picea (noun)	gymnosperm genus (noun)
a genus of temperate and Arctic evergreen trees (see spruce)	a genus of gymnosperms