Pinus mugo vs mountain pine

Pinus mugo and mountain pine both are nouns.

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

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

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

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

Pinus mugo (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