Question

what is the difference between echo and reverberation?

Answer 1

Echo: sound or sounds caused by the reflection of sound waves from a surface back to the listener.

Reverberation:It is the collection of reflected sounds from the surfaces in an enclosure like an auditorium.

Answer 2

 echo- When a sound is produced inside a large hall or a similar structure, the sound bounces back from the walls of the structure. The sound reflected back from the walls is known as the echo of the sound.
> echo is usually clear and can be clearly distinguished. 
reverberation-  The phenomenon of reverberation is caused by overlapping of multiple echoes.

IN SIMPLE WORDS - Echo is a single reflection of a sound wave whereas reverberation is the superposition of multiple echoes.
>  An echo is easily distinguishable and is almost as same as the original sound. The reverberation is not distinguishable and fades out in an exponential manner.
HOPE IT HELPED:)