Coadjutor and Co-worker

Coadjutor noun - A person who helps a more skilled person.

Co-worker and coadjutor are semantically related in assistant topic. In some cases you can use "Co-worker" instead a noun "Coadjutor".

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

Coadjutor and co-worker are semantically related in associate topic. You can use "Coadjutor" instead a noun phrase "Co-worker", if it concerns topics such as ally, especially by treaty.