These words are not equivalent. Dissent is disagreement with an opinion, especially with a majority view. Dissension is serious and persistent disagreement among a group of people, especially ill-natured disagreement which leads to quarrels.
"dissent vs. dissension." Grammar.com. STANDS4 LLC, 2023. Web. 9 Dec. 2023. <https://www.grammar.com/dissent_vs._dissension>.
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