genus Plagianthus vs ribbonwood

genus Plagianthus and ribbonwood both are nouns.

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

genus Plagianthus (noun)	ribbonwood (noun)
small genus of shrubs and trees of Australia and New Zealand	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
	deciduous New Zealand tree whose inner bark yields a strong fiber that resembles flax and is called New Zealand cotton