Pimenta dioica vs spice tree

Pimenta dioica and spice tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pimenta dioica	Yes	No	No	No
spice tree	Yes	No	No	No

As nouns, spice tree is a hypernym of Pimenta dioica; that is, spice tree is a word with a broader meaning than Pimenta dioica:

Pimenta dioica (noun)	spice tree (noun)
aromatic West Indian tree that produces allspice berries	tree bearing aromatic bark or berries
	Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood