Hysteria:
It is a psychological disorder characterized by uncontrollable emotional outbursts, often accompanied by physical symptoms, irrational behavior, and excessive or exaggerated expressions of fear, excitement, or frustration.
Hysterical:
It refers to an adjective that describes a person’s emotional state or behavior, exhibiting hysteria. It implies a high level of anxiety, intense emotions, or exaggerated reactions, lacking rationality or control.