Baby-sitter and Wet nurse

Baby-sitter noun - A person engaged to care for children when the parents are not home.

Wet nurse and baby-sitter are semantically related In some cases you can use "Wet nurse" instead a noun phrase "Baby-sitter".

Wet nurse noun - A woman hired to suckle a child of someone else.

Baby-sitter and wet nurse are semantically related in nanny topic. Sometimes you can use "Baby-sitter" instead a noun phrase "Wet nurse".