Chosek Layil

Choshek (darkness, chaos) and Layil (night), two words at the beginning of the story of creation (Bereshit 1: 1-5), both of which have to do with darkness, but have a completely different meaning.
Choshek: a chaotic contaminated atmosphere that came about due to a catastrophic destructive moment between verse 1 and verse 2. After that, a cleansing measure was necessary. Layil (night) is the word that describes the part of the day cycle where the light is completely absent.