pine vs coniferous tree

pine and coniferous tree both are nouns.

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

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

Other hypernyms of pine include conifer.

pine (noun)	coniferous tree (noun)
a coniferous tree	any gymnospermous tree or shrub bearing cones
straight-grained durable and often resinous white to yellowish timber of any of numerous trees of the genus Pinus

pine (verb)	coniferous tree (verb)
have a desire for something or someone who is not present