Pinus mugo vs true pine

Pinus mugo and true pine both are nouns.

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

As nouns, true pine is a hypernym of Pinus mugo; that is, true pine is a word with a broader meaning than Pinus mugo:

Pinus mugo: low shrubby pine of central Europe with short bright green needles in bunches of two
true pine: a coniferous tree

Other hypernyms of Pinus mugo include pine, pine tree.

Pinus mugo (noun)	true pine (noun)
low shrubby pine of central Europe with short bright green needles in bunches of two	a coniferous tree