plumed tussock vs Cortaderia richardii

plumed tussock and Cortaderia richardii both are nouns.

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

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

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

Other synonyms of plumed tussock include Arundo richardii, toe toe, toetoe.

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