Pinus thunbergii vs true pine

Pinus thunbergii and true pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pinus thunbergii	Yes	No	No	No
true pine	Yes	No	No	No

As nouns, true pine is a hypernym of Pinus thunbergii; that is, true pine is a word with a broader meaning than Pinus thunbergii:

Pinus thunbergii: large Japanese ornamental having long needles in bunches of 2; widely planted in United States because of its resistance to salt and smog
true pine: a coniferous tree

Other hypernyms of Pinus thunbergii include pine, pine tree.

Pinus thunbergii (noun)	true pine (noun)
large Japanese ornamental having long needles in bunches of 2; widely planted in United States because of its resistance to salt and smog	a coniferous tree