genus Zoysia vs genus Zoisia

genus Zoysia and genus Zoisia both are nouns.

Word	Noun	Adjective	Verb	Adverb
genus Zoysia	Yes	No	No	No
genus Zoisia	Yes	No	No	No

As nouns, genus Zoysia and genus Zoisia are synonyms defined as:

genus Zoysia and genus Zoisia: lawn grasses native to southeastern Asia and New Zealand; grown especially in warm regions

Other synonyms of genus Zoysia include Zoisia.

genus Zoysia (noun)	genus Zoisia (noun)
lawn grasses native to southeastern Asia and New Zealand; grown especially in warm regions	lawn grasses native to southeastern Asia and New Zealand; grown especially in warm regions