Sometimes two words sound very similar but they mean different things, for example, affect and effect.
Generally, affect is used as a verb ('action' word) and effect is used as a noun ('thing' word). Here are some examples to help you understand how to use these words.
Affect (verb) When affect is used as a verb, it means 'to influence'. Here is an example: Today’s rain affected thousands of people living close to the river. Memory trick: Actors Affect Audiences. (All the words start with A.)
Effect (noun) When effect is used as a noun, it means 'the result'. Here is an example: When the rain poured down for three days, the effect was that the river overflowed its banks. Memory trick: The and effect have Es hooking them together. (the=effect)
An unusual way to use 'effect' Sometimes, you can use effect as a verb. This use is quite formal, and you won't see it in use very often these days. When effect is used as a verb, it means 'to achieve or accomplish'. Here is an example: I want to effect an improvement in my written English by checking my spelling.