hickory pine vs prickly pine

hickory pine and prickly pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
hickory pine	Yes	No	No	No
prickly pine	Yes	No	No	No

As nouns, hickory pine and prickly pine are synonyms defined as:

hickory pine and prickly pine: a small two-needled upland pine of the eastern United States (Appalachians) having dark brown flaking bark and thorn-tipped cone scales

Other synonyms of hickory pine include Pinus pungens, table-mountain pine.

hickory pine (noun)	prickly pine (noun)
a small two-needled upland pine of the eastern United States (Appalachians) having dark brown flaking bark and thorn-tipped cone scales	a small two-needled upland pine of the eastern United States (Appalachians) having dark brown flaking bark and thorn-tipped cone scales