Halocarpus vs gymnosperm genus

Halocarpus and gymnosperm genus both are nouns.

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

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

Halocarpus: dioecious trees or shrubs of New Zealand; similar in habit to Dacrydium
gymnosperm genus: a genus of gymnosperms

Halocarpus (noun)	gymnosperm genus (noun)
dioecious trees or shrubs of New Zealand; similar in habit to Dacrydium	a genus of gymnosperms