Hypno is a commonly used slang term for hypnotism or hypnosis. However, there are various other synonyms that can be used to refer to the same concept. These include mesmerism, trance, hypnotherapy, suggestibility, and hypnagogia. Each of these terms describes the state of consciousness in which a person is highly receptive to suggestions. While hypno and hypnotism are more commonly used in colloquial language, the other terms have a more technical connotation and are primarily used in medical or therapeutic contexts. The key element of all these terms is the suggestion of one person's mind influencing another, be it in a therapeutic context or more entertainment-focused events.