swamp pine vs true pine

swamp pine and true pine both are nouns.

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

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

swamp pine: any of several pines that prefer or endure moist situations such as loblolly pine or longleaf pine
true pine: a coniferous tree

Other hypernyms of swamp pine include pine, pine tree.

swamp pine (noun)	true pine (noun)
any of several pines that prefer or endure moist situations such as loblolly pine or longleaf pine	a coniferous tree