mamma vs mom

mamma and mom both are nouns.

Word	Noun	Adjective	Verb	Adverb
mamma	Yes	No	No	No
mom	Yes	No	No	No

As nouns, mamma and mom are synonyms defined as:

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

mamma (noun)	mom (noun)
milk-secreting organ of female mammals	informal terms for a mother
informal terms for a mother