spruce pine vs pine tree

spruce pine and pine tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
spruce pine	Yes	No	No	No
pine tree	Yes	No	No	No

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

spruce pine: large two-needled pine of southeastern United States with light soft wood
pine tree: a coniferous tree

Other hypernyms of spruce pine include pine, true pine.

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

spruce pine: shrubby two-needled pine of coastal northwestern United States; red to yellow-brown bark fissured into small squares
pine tree: a coniferous tree

Other hypernyms of spruce pine include pine, true pine.

spruce pine (noun)	pine tree (noun)
large two-needled pine of southeastern United States with light soft wood	a coniferous tree
shrubby two-needled pine of coastal northwestern United States; red to yellow-brown bark fissured into small squares
small spruce of boggy areas of northeastern North America having spreading branches with dense foliage; inferior wood
common forest tree of the eastern United States and Canada; used especially for pulpwood