Society is the term to describe human beings together (collective, the sum of their social networks and power networks). It does not refer to everything everybody thinks or does, but only to those things that everybody acts upon – or refuses to do – quite reliably.
Because it must keep even the poorest and weakest members of a society willing to help even the richest and strongest, a society is very concerned with its citizenship, rights, ethics, and time limits. These are basic ways to achieve fairness. If they break down badly, people will think the society is unfair and start taking things from each other, refusing to help each other, or seeing those who have more as cheats.
If the strength and unity of any society's members' willingness to help each other is to be measured, it is called social capital, because it substitutes for other forms of capital. One needs less money with more solidarity in society, because the collective substitutes for the currency.
A social contract sets out rules for this kind of cooperation. One kind of social contract is a constitution – which allows for a jury or court to decide that the law, not the person, is wrong, according to the society's rules.