Foster parent and Registered nurse

Foster parent noun - A person who acts as parent and guardian for a child in place of the child's natural parents but without legally adopting the child.

Registered nurse and foster parent are semantically related. in cares for someone topic. In some cases you can use "Registered nurse" instead a noun phrase "Foster parent".

Registered nurse noun - A graduate nurse who has passed examinations for registration.

Foster parent and registered nurse are semantically related. You can use "Foster parent" instead a noun phrase "Registered nurse".