Hercules-club vs prickly ash

Hercules-club and prickly ash both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hercules-club	Yes	No	No	No
prickly ash	Yes	No	No	No

As nouns, prickly ash is a hypernym of Hercules-club; that is, prickly ash is a word with a broader meaning than Hercules-club:

Hercules-club: densely spiny ornamental of southeastern United States and West Indies
prickly ash: any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches

Hercules-club (noun)	prickly ash (noun)
densely spiny ornamental of southeastern United States and West Indies	any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches
	Australian tree having alternate simple leaves (when young they are pinnate with prickly toothed margins) and slender axillary spikes of white flowers