Co-worker and Comate

Co-worker noun - An associate that one works with.

Comate and co-worker are semantically related in ally topic. In some cases you can use "Comate" instead a noun phrase "Co-worker", when it comes to topics like helper.

Comate adjective - Bearing a coma; crowned with an assemblage of branches or leaves or bracts.

Co-worker and comate are semantically related in friend topic. Sometimes you can use "Co-worker" instead a noun "Comate", if it concerns topics such as ally, helper.