A workshop, in my mind, is a gathering of people with a similar interest who are ready to share their perspective and actively learn from one another. It is likely they already have some experience with the topic, but they are still open to forming ideas and developing new insights. There is an interesting new synergy that emerges when everyone provides input and they learn from one another.
The above is @lidja ‘s definition. Slightly different from yours, but the common thread is a genuine interest in learning from each other: even if there’s an expert leading the workshop, he/she should at least gain insights on what worked well instructionally.
Since your profile mentioned that you are a photographer, would you mind giving me your feedback on this recent workshop idea?