are two English words with very similar meanings, and very similar pronunciations. Though not actually homophones, the sound of the words is similar enough to cause most people confusion.
Even some people who use them quite often will find themselves stumped, and have to pause to think about which word is appropriate to use.
The word affect is primarily used as a verb in English. It has two main meanings, which are closely related. Affect may mean to alter the feelings of, or to change the mental state of someone or something.
It may also mean, in a broader sense, to change or affect someone or something in any way. So it is that we might say: How will the election affect the course of history? We might also say: The painting affected him so deeply he could not speak.
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