knobcone pine vs true pine

knobcone pine and true pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
knobcone pine	Yes	No	No	No
true pine	Yes	No	No	No

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

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
true pine: a coniferous tree

Other hypernyms of knobcone pine include pine, pine tree.

knobcone pine (noun)	true 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	a coniferous tree