mummy vs ma

mummy and ma both are nouns.

Word	Noun	Adjective	Verb	Adverb
mummy	Yes	No	No	No
ma	Yes	No	No	No

As nouns, mummy and ma are synonyms defined as:

Other synonyms of mummy include mama, mamma, mammy, mom, momma, mommy, mum, mumma.

mummy (noun)	ma (noun)
a body embalmed and dried and wrapped for burial (as in ancient Egypt)	informal terms for a mother
informal terms for a mother