Definition of Camping

I was thinking of things bushcrafting when doing the dishes this morning (yup, no kitchen scales, but I do wash up). Darren called a few minutes later and we chatted about life, the universe and other such nonsense that we can't change. At the end of it I was left with the question - just what is camping?

In the old days, I thought it was "being under canvas", but not these days. I looked at the CRoW Act (schedule 2 1(s)bans camping on Access Land) - no definition. The Scottish Outdoor Access Code fails to define camping beyond the detailed:

This type of camping is lightweight, done in small numbers and only for two or three nights in any one place.

So, lets think about this. Sleeping under a tent is camping. Obviously.

But car camping isn't lightweight camping.

Sleeping under a tarpaulin is camping.

But is sleeping on the ground in a bivvy bag classed as camping? Like this.

What about sleeping out when night fishing? Or in a hide like this when bird-watching? What about lying under a shelter manufacturer from natural materials? Like this. Sleeping in a sea cave? Like this. Sleeping in a hammock? Like this.

Definitions according to the Compact Oxford English Dictionary: link mentions tents, huts or other buildings. yahooAnswers elected an answer which included a tent, a primitive structure, or no shelter at all (link). Dictionary.net lists tents, huts, etc., erected for shelter (link).

So, if camping on Access Land in England & Wales is banned under the CRoW Act, is sleeping in a non-built shelter, eg a bivvy-bag, or just sleeping under the stars also banned?