Pinus torreyana vs pine tree

Pinus torreyana and pine tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pinus torreyana	Yes	No	No	No
pine tree	Yes	No	No	No

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

Pinus torreyana: medium-sized five-needled pine of southwestern California having long cylindrical cones
pine tree: a coniferous tree

Other hypernyms of Pinus torreyana include pine, true pine.

Pinus torreyana (noun)	pine tree (noun)
medium-sized five-needled pine of southwestern California having long cylindrical cones	a coniferous tree