Metalworker and Trained worker

Metalworker noun - Someone who works metal (especially by hammering it when it is hot and malleable).

Trained worker and metalworker are semantically related. In some cases you can use "Trained worker" instead a noun "Metalworker".

Trained worker noun - A worker who has acquired special skills.

Metalworker and trained worker are semantically related. Sometimes you can replace term "Metalworker" with "Trained worker", this terms are similar.