Cortaderia richardii vs plumed tussock

Cortaderia richardii and plumed tussock both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cortaderia richardii	Yes	No	No	No
plumed tussock	Yes	No	No	No

As nouns, Cortaderia richardii and plumed tussock are synonyms defined as:

Cortaderia richardii and plumed tussock: tall grass of New Zealand grown for plumelike flower heads

Other synonyms of Cortaderia richardii include Arundo richardii, toe toe, toetoe.

Cortaderia richardii (noun)	plumed tussock (noun)
tall grass of New Zealand grown for plumelike flower heads	tall grass of New Zealand grown for plumelike flower heads