wire grass vs yard grass

wire grass and yard grass both are nouns.

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

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

wire grass and yard grass: coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere

Other synonyms of wire grass include Eleusine indica, goose grass, yardgrass.

wire grass (noun)	yard grass (noun)
coarse annual grass having fingerlike spikes of flowers; native to Old World tropics; a naturalized weed elsewhere	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