Fringe science is unlike pseudoscience. However, they are very familiar as both involves a form of sci-fi. Firstly, pseudoscience involves more of fantasy science, such as ancient lore of alchemy, astrology, homeopathic, and tarot reading. They are based on personal intuition and evaluation. In a sense, they are philosophy. Meanwhile, fringe science is based on unexplained phenomena that exist. However most of them are emphasized from the unknowns. I order to make this clearer, we will start with pseudoscience.
Pseudoscience is very unique, it is based on philosophy. There are no actual facts or proof. Pseudoscience is considered to be fantasy. However, there are science within it. Alchemy is a study of turning stone to gold, or creating elixir of immortality. This is closely related to chemistry and the science of modern medicine. Astrology is obviously related to astronomy.
Next is fringe science. Fringe science involves hypnotism, psychic phenomenon and dimensional travel. They are mostly an unexplained phenomenon with no clear scientific explanation. Hypnotism involves implanting belief into a persons mind. It is some sort of temporary brainwashing and altering a person's belief. Psychic phenomenon is also an unexplained phenomenon. A psychic phenomenon can either be triggered by strong emotion or thoughts, or sheer mind power, aware or unaware. It can be in the form of pyrokinesis by vibrating molecules to produce heat, or poltergeist by moving object with mind.

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