Coworker and Playmate

Coworker noun - A fellow worker.

Playmate and coworker are semantically related. in partner topic. In some cases you can use "Playmate" instead a noun "Coworker", when it comes to topics like companion, colleague, helper, person who takes part with another.

Playmate noun - A companion at play.

Coworker and playmate are semantically related. Sometimes you can use "Coworker" instead a noun "Playmate".