wire grass vs prairie grass

wire grass and prairie grass both are nouns.

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

As nouns, wire grass and prairie grass are synonyms defined as:

wire grass and prairie grass: handsome hardy North American grass with foliage turning pale bronze in autumn

Other synonyms of wire grass include Andropogon scoparius, broom beard grass, Schizachyrium scoparium.

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