The difference between Knock down and Reduce
When used as verbs, knock down means to hit or knock (something), intentionally or accidentally, so that it falls, whereas reduce means to bring down the size, quantity, quality, value or intensity of something.
check bellow for the other definitions of Knock down and Reduce
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Knock down as a verb (transitive):
To hit or knock (something), intentionally or accidentally, so that it falls.
Examples:
"As I took the can off the shelf, I knocked down the one beside it."
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Knock down as a verb (transitive):
To demolish.
Examples:
"We knocked down the garden shed when we moved."
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Knock down as a verb (transitive):
At an auction, to declare (something) sold with a blow from the gavel.
Examples:
"The picture was knocked down for £50."
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Knock down as a verb (transitive, informal):
To reduce the price of.
Examples:
"They knocked it down by another £5, so we bought it."
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Knock down as a verb:
To drink fast.
Examples:
"I love to go down the pub and knock down pints of lager."
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Knock down as a verb (transitive, usually, passive):
To disassemble for shipment.
Examples:
"The furniture is shipped knocked down, so assembly is required."
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Reduce as a verb (transitive):
To bring down the size, quantity, quality, value or intensity of something; to diminish, to lower, to impair.
Examples:
"to reduce weight, speed, heat, expenses, price, personnel etc."
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Reduce as a verb (intransitive):
To lose weight.
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Reduce as a verb (transitive):
To bring to an inferior rank; to degrade, to demote.
Examples:
"to reduce a sergeant to the ranks"
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Reduce as a verb (transitive):
To humble; to conquer; to subdue; to capture.
Examples:
"to reduce a province or a fort"
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Reduce as a verb (transitive):
To bring to an inferior state or condition.
Examples:
"to reduce a city to ashes"
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Reduce as a verb (transitive, cooking):
To decrease the liquid content of food by boiling much of its water off.
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Reduce as a verb (transitive, chemistry):
To add electrons / hydrogen or to remove oxygen.
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Reduce as a verb (transitive, metallurgy):
To produce metal from ore by removing nonmetallic elements in a smelter.
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Reduce as a verb (transitive, mathematics):
To simplify an equation or formula without changing its value.
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Reduce as a verb (transitive, computer science):
To express the solution of a problem in terms of another (known) algorithm.
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Reduce as a verb (transitive, logic):
To convert a syllogism to a clearer or simpler form
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Reduce as a verb (transitive, legal):
To convert to written form (Usage note: this verb almost always take the phrase "to writing").
Examples:
"It is important that all business contracts be reduced to writing."
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Reduce as a verb (transitive, medicine):
To perform a reduction; to restore a fracture or dislocation to the correct alignment.
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Reduce as a verb (transitive, military):
To reform a line or column from (a square).
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Reduce as a verb (transitive, obsolete):
To translate (a book, document, etc.).
Examples:
"a book reduced into English"