ribbonwood vs genus Plagianthus

ribbonwood and genus Plagianthus both are nouns.

Word	Noun	Adjective	Verb	Adverb
ribbonwood	Yes	No	No	No
genus Plagianthus	Yes	No	No	No

ribbonwood (noun)	genus Plagianthus (noun)
small tree or shrub of New Zealand having a profusion of axillary clusters of honey-scented paper-white flowers and whose bark is used for cordage	small genus of shrubs and trees of Australia and New Zealand
deciduous New Zealand tree whose inner bark yields a strong fiber that resembles flax and is called New Zealand cotton