Pennistum villosum vs feathertop grass

Pennistum villosum and feathertop grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Pennistum villosum	Yes	No	No	No
feathertop grass	Yes	No	No	No

As nouns, Pennistum villosum and feathertop grass are synonyms defined as:

Pennistum villosum and feathertop grass: northeastern tropical African plant having feathery panicles

Other synonyms of Pennistum villosum include feathertop.

Pennistum villosum (noun)	feathertop grass (noun)
northeastern tropical African plant having feathery panicles	northeastern tropical African plant having feathery panicles