divide

nouns

a serious disagreement between two groups of people (typically producing tension or hostility)
is a type of (narrower)
a conflict of people's opinions or actions or characters
a ridge of land that separates two adjacent river systems

verbs

separate into parts or portions
"divide the cake into three equal parts"; "The British carved up the Ottoman Empire after World War I"
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antonym
perform a division
"Can you divide 49 by seven?"
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antonym
act as a barrier between; stand between
"The mountain range divides the two countries"
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come apart
"The two pieces that we had glued separated"
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make a division or separation
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force, take, or pull apart
"He separated the fighting children"; "Moses parted the Red Sea"