Intimidation is intentional behavior by a person that has another (or multiple others) in fear of injury or harm. To prove the behaviors made others undergo terrorism or panic would not be necessary.
Threatening (or more specifically: threatening actions/behavior) is the crime of when one, when knowing or with any intent, puts someone else in danger of bodily, emotional, intellectual/cognitive, sexual or financial harm or negatives. Threats also include property damage, intent/planning to terrorize others and hating/condemning people of particular genders, races and ethnicity classes.
Intimidating another person is a crime in several states in the U.S..
Intimidation related to hate, prejudice or discrimination often includes the following: "which annoys, threatens, intimidates, alarms, or puts a person in fear of their safety...because of a belief or perception regarding such person's race, color, national origin, ancestry, gender, religion, religious practice, age, disability or sexual orientation, regardless of whether the belief or perception is correct."