Hocus-pocus and Optical illusion

Hocus-pocus noun - The art or skill of performing tricks or illusions for entertainment.

Optical illusion and hocus-pocus are semantically related. In some cases you can use "Optical illusion" instead a noun phrase "Hocus-pocus".

Optical illusion noun - An optical phenomenon that results in a false or deceptive visual impression.

Hocus-pocus and optical illusion are semantically related. Sometimes you can use "Hocus-pocus" instead a noun phrase "Optical illusion".