Korean lawn grass vs Japanese lawn grass

Korean lawn grass and Japanese lawn grass both are nouns.

Word	Noun	Adjective	Verb	Adverb
Korean lawn grass	Yes	No	No	No
Japanese lawn grass	Yes	No	No	No

As nouns, Korean lawn grass and Japanese lawn grass are synonyms defined as:

Korean lawn grass and Japanese lawn grass: lawn grass common in China and Japan; grown also in United States

Other synonyms of Korean lawn grass include Zoysia japonica.

Korean lawn grass (noun)	Japanese lawn grass (noun)
lawn grass common in China and Japan; grown also in United States	lawn grass common in China and Japan; grown also in United States