mamma vs female parent

mamma and female parent both are nouns.

Word	Noun	Adjective	Verb	Adverb
mamma	Yes	No	No	No
female parent	Yes	No	No	No

As nouns, female parent is a hypernym of mamma; that is, female parent is a word with a broader meaning than mamma:

mamma: informal terms for a mother
female parent: a woman who has given birth to a child (also used as a term of address to your mother)

Other hypernyms of mamma include mother.

mamma (noun)	female parent (noun)
milk-secreting organ of female mammals	a woman who has given birth to a child (also used as a term of address to your mother)
informal terms for a mother