Plural of feudality; instances or aspects of feudal systems, feudal estates, or feudal relationships.
From feudal plus -ity suffix creating an abstract noun meaning 'the quality or state of.' Feudality specifically refers to the feudal system as a form of organization or tenure, particularly common in medieval scholarship.
While 'feudalism' describes the whole system, 'feudalities' (rarely used today) pointed to regional variations—different kingdoms had different feudal arrangements, and scholars needed a word to discuss these local differences.
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