evoke or invoke?

Don’t feel bad if you have difficulty remembering the difference between evoke and invoke, as the words are quite similar in many ways and have considerable overlap in meaning. However, the words do differ, and you would not want to substitute one for the other. Invoke is used of putting into effect or calling upon such things as laws, authority, or privilege (“the principal invoked a rule forbidding students from asking questions”). Evoke is primarily used in the sense “to call forth or up” and is often found in connection with such things as memories, emotions, or sympathy.