FACTOR - [noun] a fact, situation that influences something
Examples of use
People's opinions on political issues are often based on economic and social factors.
Price is often a key factor in the success of a new product.
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English speaking practise
Remember that if you don't use that word in English conversations or writing you'll forget it in a short time. So the best thing you can do to learn this word is just trying to use it in speaking or writing. Remember also that practise is the key to fluent english speaking.
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