Correction Help

Usually, effect is a noun and affect is a verb. Compare:

The company-wide lay-offs affected many departments but had a positive effect on profitability.

However, both words can be used as verbs and nouns.

As a Verb

Affect is usually a verb that means "influence" or "cause a change".

The banking crisis negatively affected the unemployment rate.

Effect is a verb used in a formal writing style that means "cause to occur".

Registration under section 9 effects the change of name according to the tenor of the application.

As a Noun

Affect is a noun used in Psychology that means "feeling" or "emotion".

A person with flat affect has no or nearly no emotional expression

Effect is most commonly a noun that means "change" or "result".

Changing the curtains has had a significant effect on the amount of light in the room.