The difference between Button and Undo
When used as nouns, button means a knob or disc that is passed through a loop or (buttonhole), serving as a fastener, whereas undo means an operation that reverses a previous action.
When used as verbs, button means to fasten with a button, whereas undo means to reverse the effects of an action.
check bellow for the other definitions of Button and Undo
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Button as a noun:
A knob or disc that is passed through a loop or (buttonhole), serving as a fastener.
Examples:
"April fastened the buttons of her overcoat to keep out the wind."
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Button as a noun:
A mechanical device meant to be pressed with a finger in order to open or close an electric circuit or to activate a mechanism.
Examples:
"Pat pushed the button marked "shred" on the blender."
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Button as a noun (graphical user interface):
An on-screen control that can be selected as an activator of an attached function.
Examples:
"Click the button that looks like a house to return to your browser's home page."
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Button as a noun (US):
A badge worn on clothes, fixed with a pin through the fabric.
Examples:
"The politician wore a bright yellow button with the slogan "Vote Smart" emblazoned on it."
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Button as a noun (botany):
A bud.
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Button as a noun:
The head of an unexpanded mushroom.
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Button as a noun (slang):
The clitoris.
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Button as a noun (curling):
The center (bullseye) of the house.
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Button as a noun (fencing):
The soft circular tip at the end of a foil.
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Button as a noun (poker):
A plastic disk used to represent the person in last position in a poker game; also dealer's button.
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Button as a noun (poker):
The player who is last to act after the flop, turn and river, who possesses the button.
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Button as a noun (archaic):
A person who acts as a decoy.
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Button as a noun:
A raised pavement marker to further indicate the presence of a pavement marking painted stripe.
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Button as a noun (South Africa, slang):
A methaqualone tablet (used as a recreational drug).
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Button as a noun:
A piece of wood or metal, usually flat and elongated, turning on a nail or screw, to fasten something, such as a door.
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Button as a noun:
A globule of metal remaining on an assay cupel or in a crucible, after fusion.
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Button as a noun:
A knob; a small ball; a small, roundish mass.
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Button as a noun:
A small white blotch on a cat's coat.
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Button as a noun (UK, archaic):
A unit of length equal to 1/12 of an inch.
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Button as a noun:
The means for initiating a nuclear strike or similar cataclysmic occurrence.
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Button as a noun (lutherie):
In an instrument of the violin family, the near semi-circular shape extending from the top of the back plate of the instrument, meeting the heel of the neck.
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Button as a noun (lutherie):
.
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Button as a noun (lutherie, bowmaking):
.
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Button as a noun:
The least amount of care or interest; a whit or jot.
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Button as a noun (comedy):
The final joke at the end of a comedic act (such as a sketch, set, or scene).
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Button as a verb (transitive):
To fasten with a button.
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Button as a verb (intransitive):
To be fastened by a button or buttons.
Examples:
"The coat will not button."
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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: