Female parent and Foster mother

Female parent noun - A woman who has given birth to a child (also used as a term of address to your mother).

Foster mother and female parent are semantically related. In some cases you can use "Foster mother" instead a noun phrase "Female parent".

Foster mother noun - A woman who is a foster parent and raises another's child.

Female parent and foster mother are semantically related. You can use "Female parent" instead a noun phrase "Foster mother".