Z-wave status meanings: dynamic session ready etc

On the “states” page, z-wave devices show a number of different states, and I can’t seem to find any documentation on what they mean. In particular:

Sleeping
CacheLoad
Dynamic
Session
Ready

Sleeping seems intuitive, I think this is the normal state for battery powered devices. I would guess CacheLoad means the state is being inferred from some formerly cached state. Ready also seems fairly intuitive.

But what do “Dynamic” and “Session” mean?

Those are the states OZW driver reports.

Every powered device should reach ‘ready’ and battery device should reach ‘sleeping’ once it wakes up.