A plumber is a domestic worker.

Answer in a word:

I am a domestic worker. My name is a six-letter word, and it starts with the letter 'D' and ends with 'R'.

Answer in a word:

A person whose profession requires manual labour and involve himself in fitting and repairing pipes.

Answer in a word:

Name a profession that requires mental training and pursue a degree in medicine.

Identify three jobs that will come under each category listed below.