What do we mean when we say civilization?

Question

are the peoples of Britain who made the post holes some 8000 or more years ago a civilization and if not, why?

Answer 1

Civilization essentially means an urbanized central population, with massive cities (i.e. Rome or Athens). It also means everything that must necessarily exist in a city: An economy, a culture, a society, etc. The tribes who built Stonehenge, by comparison, lived in much smaller villages and settlements that were much more primitive culturally and economically.

Answer 2

Civilization;

From the original 'Civitae' meaning "City dwellers'".

This was actually a Roman Tax terminology.
'Paganae' being "those not living in cities", also allowed to practice their faith without exception since only the 'Citizens' were forced to worship at the Roman Temples.