Backup and Fellow worker

Backup noun - A crowded mass (as of cars) that impedes or blocks movement.

Fellow worker and backup are semantically related In some cases you can use "Fellow worker" instead a noun "Backup".

Nearby Word: backing

Fellow worker noun - An associate that one works with.

Backup and fellow worker are semantically related in follower topic. Sometimes you can use "Backup" instead a noun phrase "Fellow worker", if it concerns topics such as assistant, helper.