Affect and effect are two of the most commonly confused words in English, but don’t worry—we’ll help you keep them straight. The basic difference is this: affect is usually a verb, and effect is usually a noun.
What’s the difference between affect and effect? If two words have earned the superlative for most commonly confused words in the English language, it’s effect and affect. Not only do the two words sound alike, they also share similar meanings and their spellings only differ by one letter.
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