Conjuring trick and Optical illusion

Conjuring trick noun - An illusory feat; considered magical by naive observers.

Optical illusion and conjuring trick are semantically related. In some cases you can use "Optical illusion" instead a noun phrase "Conjuring trick".

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

Conjuring trick and optical illusion are semantically related. You can use "Conjuring trick" instead a noun phrase "Optical illusion".