dwarf mountain pine vs mountain pine

dwarf mountain pine and mountain pine both are nouns.

Word	Noun	Adjective	Verb	Adverb
dwarf mountain pine	Yes	No	No	No
mountain pine	Yes	No	No	No

As nouns, dwarf mountain pine and mountain pine are synonyms defined as:

dwarf mountain pine and mountain pine: low shrubby pine of central Europe with short bright green needles in bunches of two

Other synonyms of dwarf mountain pine include mugho pine, mugo pine, Pinus mugo, Swiss mountain pine.

dwarf mountain pine (noun)	mountain pine (noun)
low shrubby pine of central Europe with short bright green needles in bunches of two	low shrubby pine of central Europe with short bright green needles in bunches of two
	tall pine of western North America with stout blue-green needles; bark is grey-brown with rectangular plates when mature
	evergreen tree of New Zealand resembling the kawaka