<human>:  What are the differences between words "affect" and "effect"?
<bot>: The main difference between the words affect and effect is in their usage, as affect is generally used as a verb and effect is used as a noun. Affect is used to describe the influence of a particular thing on another, as in "the weather affects our mood". Effect is used to describe the result of something or the outcome, as in "the effect of the medication is to reduce fever".