mascarene grass vs zoysia

mascarene grass and zoysia both are nouns.

Word	Noun	Adjective	Verb	Adverb
mascarene grass	Yes	No	No	No
zoysia	Yes	No	No	No

As nouns, zoysia is a hypernym of mascarene grass; that is, zoysia is a word with a broader meaning than mascarene grass:

mascarene grass: Asiatic creeping perennial grass; introduced in southern United States as a drought-resistant lawn grass
zoysia: any of several creeping grasses of the genus Zoysia

mascarene grass (noun)	zoysia (noun)
Asiatic creeping perennial grass; introduced in southern United States as a drought-resistant lawn grass	any of several creeping grasses of the genus Zoysia