Baby-sitter and Nurse practitioner

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

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

Nurse practitioner noun - A registered nurse who has received special training and can perform many of the duties of a physician.

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