Pareidolia

Pareidolia, pareidol illusion (from greek Παρά - “near”, “about”, “deviation from something”, εἴδωλον - “image”) is a false visual or aural perception of real objects as others, similar in common features. When pareidolia happening, vague and confusing visual or auditory image perceived as something distinct and definite. For example, figures of people or animals are seen in the form of clouds; in geometric figures - a face; in delayed audio recordings - "hidden messages".