wire grass vs Schizachyrium scoparium

wire grass and Schizachyrium scoparium both are nouns.

Word	Noun	Adjective	Verb	Adverb
wire grass	Yes	No	No	No
Schizachyrium scoparium	Yes	No	No	No

As nouns, wire grass and Schizachyrium scoparium are synonyms defined as:

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

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

wire grass (noun)	Schizachyrium scoparium (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