Hypnocore is a subgenre of Dreamy that relates to surreality and a sense of being controlled, hypnotized, or otherwise losing one's self-control. In terms of visuals, hypno-core often has spirals, moving patterns, eyes, optical illusions, unreality, deja vu, and an undeniable sense of things being wrong.
Hypno-core can often relate to neurodivergencies and mental illnesses such as DID, OSDD, BPD, and anything that causes dissociation and intrusive thoughts.
There are several ways to experience hypnocore, just as there are several different views of hypnosis. Hypnocore can be experienced in everyday happenings where one is in a trance of sort, such as when reading, driving, or when half-asleep. A darker version of hypnocore can also be experienced in dreams or nightmares that involve doing out-of-character actions, and dreams where one knows they are dreaming but is unable to wake up.
But the hypnocore on the dreamy page doesn't match the hypno-core one.