Pinus attenuata vs knobcone pine

Pinus attenuata and knobcone pine both are nouns.

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

As nouns, Pinus attenuata and knobcone pine are synonyms defined as:

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

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