It’s all making sense to me now.
The moral foundation theory developed by Graham and his colleagues consists of five main moral foundations:
Harm – caring for and not hurting others,
Fairness – equality and reciprocity,
Ingroup – loyalty to one’s group,
Authority – respect for leadership, and
Purity – the sanctity of social norms and customs.
Liberals elevate harm and fairness above the others, conservatives consider all equally.
If these dimensions seem odd, there is some evidence that this is a good model of morality