The difference between Redo and Undo
When used as nouns, redo means a repeated action, whereas undo means an operation that reverses a previous action.
When used as verbs, redo means to do again, whereas undo means to reverse the effects of an action.
check bellow for the other definitions of Redo and Undo
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Redo as a verb:
To do again.
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Redo as a noun:
A repeated action; a doing again, refurbishment, etc.
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Undo as a verb:
To reverse the effects of an action.
Examples:
"Fortunately, we can undo most of the damage to the system by the war."
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Undo as a verb:
To unfasten.
Examples:
"Could you undo my buckle for me?"
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Undo as a verb (figuratively):
To impoverish or ruin, as in reputation; to cause the downfall of.
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Undo as a noun (computing):
An operation that reverses a previous action.
Examples:
"How many undos does this program support?"
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Undo as an adjective: