noun
dispute refers to a clash of opposing opinions, often involving a matter of a legal or official nature, and implies vehemence or anger in debate a dispute over property boundaries; argument refers to a discussion in which there is disagreement and suggests the use of logic and the bringing forth of facts to support or refute a point; controversy connotes a disagreement of lengthy duration over a matter of some weight or importance
See dispute in Webster's New World Roget's A-Z Thesaurus II
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