silver pine vs conifer

silver pine and conifer both are nouns.

Word	Noun	Adjective	Verb	Adverb
silver pine	Yes	No	No	No
conifer	Yes	No	No	No

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

Other hypernyms of silver pine include coniferous tree.

silver pine (noun)	conifer (noun)
tall pine of western North America with stout blue-green needles; bark is grey-brown with rectangular plates when mature	any gymnospermous tree or shrub bearing cones
timber tree of New Zealand having shiny white wood