In everyday speech, affect is a verb. It means to influence something, such as in the headline from the Albuquerque News,
Downed Power Line Affects PNM Customers
The downed power line had an impact on some power customers: they were without electricity overnight.
Effect is most commonly used as a noun meaning the result or impact of something, an outcome. If there's "a/an/the" in front of it, it's an effect. The second sentence is from a story about the outcome of long-term sleeping trouble,
The Effect of Persistent Sleepiness
Source. (vocabulary.com)
In everyday speech, affect is a verb. It means to influence something, such as in the headline from the Albuquerque News,
Downed Power Line Affects PNM Customers
The downed power line had an impact on some power customers: they were without electricity overnight.
Effect is most commonly used as a noun meaning the result or impact of something, an outcome. If there's "a/an/the" in front of it, it's an effect. The second sentence is from a story about the outcome of long-term sleeping trouble,
The Effect of Persistent Sleepiness
[Source.](https://www.vocabulary.com/articles/chooseyourwords/affect-effect/)
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