Pre-K and Playgroup

Pre-K noun - A school for children who are generally less than five years old.

Playgroup and pre-K are semantically related in nursery school topic. In some cases you can use "Playgroup" instead a noun phrase "Pre-K", when it comes to topics like child care center.

Pre-K and playgroup are semantically related in nursery school topic. You can use "Pre-K" instead a noun "Playgroup", if it concerns topics such as child care center.