Pinus attenuata vs pine tree

Pinus attenuata and pine tree both are nouns.

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

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

Pinus attenuata: medium-sized three-needled pine of the Pacific coast of the United States having a prominent knob on each scale of the cone
pine tree: a coniferous tree

Other hypernyms of Pinus attenuata include pine, true pine.

Pinus attenuata (noun)	pine tree (noun)
medium-sized three-needled pine of the Pacific coast of the United States having a prominent knob on each scale of the cone	a coniferous tree