Pinus jeffreyi vs true pine

Pinus jeffreyi and true pine both are nouns.

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

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

Pinus jeffreyi: tall symmetrical pine of western North America having long blue-green needles in bunches of 3 and elongated cones on spreading somewhat pendulous branches; sometimes classified as a variety of ponderosa pine
true pine: a coniferous tree

Other hypernyms of Pinus jeffreyi include pine, pine tree.

Pinus jeffreyi (noun)	true pine (noun)
tall symmetrical pine of western North America having long blue-green needles in bunches of 3 and elongated cones on spreading somewhat pendulous branches; sometimes classified as a variety of ponderosa pine	a coniferous tree