Stratification

structured social inequality, or, more specifically, systematic inequalities between groupd of people that arise as intended or unintended consequences of social processes and relationships 

social equality

a condition whereby no differences in wealth, power, prestige, or status based on nonnatural conventions exist 

ontological equality

the notion that everyone is created equal in the eyes of God

equality of opportunity

the idea that inequality of condition is acceptbale so long as the rules of the game, so to speak, are fair