What is the main difference between "affect" and "effect"?

The distinction between "affect" and "effect" is fundamentally based on their roles in language and meaning. "Affect" is primarily used as a verb, meaning to influence or have an impact on something. In contrast, "effect" functions mainly as a noun that refers to the result or outcome of a particular influence or change. For example, when you say, "The rain affected the game," you are indicating that the rain had an influence on how the game progressed. Conversely, if you say, "The effect of the rain was a delay," you are describing the specific outcome or result of that influence.

This understanding clarifies the relationship between the two words where "affect" is about the action of influencing, while "effect" is about what arises from that action. This nuanced distinction is critical in both written and spoken communication, helping to convey ideas accurately.