As a verb, to effect means to bring about.. When used as a noun. As a noun, the word affect relates to the display of emotion. As a noun, effect means the result or outcome of a cause. This is effect's most common usage.Also, a person's effects means his/her immediate personal belongings.Usage. Affect is most commonly used in its verb form. Effect is most commonly used in its noun form.n its most common usage, affect is a verb; to affect something is to make an impact on something. In its most common usage, effect is a noun and is usually followed by the preposition on; things have an effect on other things. When used as a verb.