That's certainly a long list of words!
To narrow this down, it may be helpful to think in terms of events that need to be tracked. Firstly, how are we going to use the tracking data:
- Who are our reporting stakeholders and what do they want to know?
- Are we planning to use xAPI for anything in addition to reporting?
- Based on the above, what events do we need to track and what data do we need to track about those events.
Once we've got the events pinned down, it should be more straightforward to select appropriate vocabulary. For this pilot within the design cohort I suggest we keep things simple and only track 3-6 different types of event.
Perhaps we can discuss these questions on the next call?