white pine vs true pine

white pine and true pine both are nouns.

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

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

white pine: any of several five-needled pines with white wood and smooth usually light grey bark when young; especially the eastern white pine
true pine: a coniferous tree

Other hypernyms of white pine include pine, pine tree.

white pine (noun)	true pine (noun)
any of several five-needled pines with white wood and smooth usually light grey bark when young; especially the eastern white pine	a coniferous tree
soft white wood of white pine trees