loblolly pine vs true pine

loblolly pine and true pine both are nouns.

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

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

loblolly pine: tall spreading three-needled pine of southeastern United States having reddish-brown fissured bark and a full bushy upper head
true pine: a coniferous tree

Other hypernyms of loblolly pine include pine, pine tree.

loblolly pine (noun)	true pine (noun)
tall spreading three-needled pine of southeastern United States having reddish-brown fissured bark and a full bushy upper head	a coniferous tree