What are the differences between reverb and delay effects in audio production, and how can the use of reverb before delay enhance the overall sound quality of a mix?

Reverb and delay are both audio effects used in production. Reverb creates a sense of space and depth, while delay repeats the sound with a time delay. Using reverb before delay can enhance the mix by creating a more natural and cohesive sound, as the reverb provides a sense of space for the delayed sound to exist in. This can result in a more immersive and polished overall sound quality.