Cynodon plectostachyum vs giant star grass

Cynodon plectostachyum and giant star grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Cynodon plectostachyum	Yes	No	No	No
giant star grass	Yes	No	No	No

As nouns, Cynodon plectostachyum and giant star grass are synonyms defined as:

Cynodon plectostachyum and giant star grass: perennial grass having stems 3 to 4 feet high; used especially in Africa and India for pasture and hay

Cynodon plectostachyum (noun)	giant star grass (noun)
perennial grass having stems 3 to 4 feet high; used especially in Africa and India for pasture and hay	perennial grass having stems 3 to 4 feet high; used especially in Africa and India for pasture and hay