goose grass vs Panicum Texanum

goose grass and Panicum Texanum both are nouns.

Word	Noun	Adjective	Verb	Adverb
goose grass	Yes	No	No	No
Panicum Texanum	Yes	No	No	No

As nouns, goose grass and Panicum Texanum are synonyms defined as:

Other synonyms of goose grass include Texas millet.

goose grass (noun)	Panicum Texanum (noun)
low-growing perennial having leaves silvery beneath; northern United States, Europe, Asia	annual weedy grass used for hay
annual weedy grass used for hay
coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere
annual having the stem beset with curved prickles; North America and Europe and Asia