matzah ball vs matzo ball

matzah ball and matzo ball both are nouns.

Word	Noun	Adjective	Verb	Adverb
matzah ball	Yes	No	No	No
matzo ball	Yes	No	No	No

As nouns, matzah ball and matzo ball are synonyms defined as:

matzah ball and matzo ball: a Jewish dumpling made of matzo meal; usually served in soup

Other synonyms of matzah ball include matzoh ball.

matzah ball (noun)	matzo ball (noun)
a Jewish dumpling made of matzo meal; usually served in soup	a Jewish dumpling made of matzo meal; usually served in soup