Is effect or affect always a verb?

The Word effect is usually a noun. For example, the effect of the warm weather is that the glaciers are melting. Effect can be a verb, however, meaning to bring about or accomplish. For example, the new director hoped to effect change in the marketing department.

The Word affect is usually a verb. Warm weather affects the glaciers. Affect is, however, used as a noun in the fields of psychology and psychiatry. For example, the report noted Jasper's solitary activities and lack of affect.