What elements make professions of different levels?

Mostly the level of education that goes into each profession.

Some professions require lots of study, some don’t m. The fact their profession doesn’t require a lot of study doesn’t reduce their expertise in the area.

Explanation:

Since professionals are specialized in a certain area and have specific scope of practices, the depth of knowledge basically defines what each professional can do with the knowledge they have.

I’m from Canada, and here we have a system called profession NOC. It basically ranks professions based on the level of skill and study someone has to have in order to be a professional in that area.

Eg.

A nurse is NOC A (4 years of study)

A Practical Nurse is NOC B (2 years of study)

A care aid is NOC C (10 months of study)

theres nothing above