Containing factionalism refers to the efforts made by a government or political system to manage and mitigate the influence of factions, which are groups of individuals with shared interests that may conflict with the common good. This concept highlights the need for a balance between individual liberties and collective stability, as unchecked factionalism can lead to divisiveness and undermine democratic governance. By understanding this term, one can appreciate the significance of structures that prevent any single faction from gaining disproportionate power.