yard grass vs wire grass

yard grass and wire grass both are nouns.

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

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

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

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

yard grass (noun)	wire 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