mountain pine vs mugo pine

mountain pine and mugo pine both are nouns.

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

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

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

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

mountain pine (noun)	mugo 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