Japanese lawn grass vs Korean lawn grass

Japanese lawn grass and Korean lawn grass both are nouns.

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

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

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

Other synonyms of Japanese lawn grass include Zoysia japonica.

Japanese lawn grass (noun)	Korean 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