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 replace phrase "Wet-nurse" with "Baby-sitter", this phrases are similar.

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

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