Oregon myrtle vs spice tree

Oregon myrtle and spice tree both are nouns.

Word	Noun	Adjective	Verb	Adverb
Oregon myrtle	Yes	No	No	No
spice tree	Yes	No	No	No

As nouns, Oregon myrtle and spice tree are synonyms defined as:

Oregon myrtle and spice tree: Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood

Oregon myrtle (noun)	spice tree (noun)
Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood	tree bearing aromatic bark or berries
	Pacific coast tree having aromatic foliage and small umbellate flowers followed by olivelike fruit; yields a hard tough wood