Learn English – What adjective describes incorrect assumptions

In some professional organizations, the word "Journeyman" is used for someone who has passed their apprenticeship and able to complete work on their own, but are not necessarily masters yet.

EDIT: If you are seeking a skill level reference for learning material. This seems to be a standard:

For Beginner [programmers, developers, carpenters, chefs]
For Intermediate [programmers, developers, carpenters, chefs]
For Advanced [programmers, developers, carpenters, chefs]

You are asking for a word to replace "intermediate", but the more I think about it "intermediate" may actually be the word you need.

I believe the answer to your question hinges on whether it's a mass noun or a count noun. You generally can't use "of" to turn a count noun into an adjective phrase.

• "of book" doesn't work because "book" is a count noun.
• "of assistance" works because "assistance" is a mass noun.

There may be exceptions to this, but I'm sure this rule will stand you in good stead, in the vast majority of cases.