wire grass vs Eleusine

wire grass and Eleusine both are nouns.

Word	Noun	Adjective	Verb	Adverb
wire grass	Yes	No	No	No
Eleusine	Yes	No	No	No

wire grass (noun)	Eleusine (noun)
coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere	annual and perennial grasses of savannas and upland grasslands
handsome hardy North American grass with foliage turning pale bronze in autumn