mountain pine has 10 distinct synonyms spread across 3 of its 3 senses. Each sense below keeps its own list, because a synonym belongs to a meaning and not to a word: swapping one sense's substitute into another sense's sentence is how a thesaurus makes writing worse. WordNet records no antonym for it — antonymy is a relation between word forms rather than concepts, so it is deliberately sparse.
Counts are distinct word forms across every sense. A synonym that appears under three senses is counted once here and shown three times below, under each sense it belongs to.
evergreen tree of New Zealand resembling the kawaka
tall pine of western North America with stout blue-green needles; bark is grey-brown with rectangular plates when mature
low shrubby pine of central Europe with short bright green needles in bunches of two
Synonyms, antonyms and the broader and narrower relations for mountain pine come from Princeton University’s WordNet. Full sources and licences.