Die away and Thin out

Die away verb - Become less in amount or intensity.

Thin out and die away are semantically related in decrease topic. In some cases you can use "Thin out" instead a verb "Die away", when it comes to topics like decrease to a point.

Thin out verb - Make sparse.

Die away and thin out are semantically related in decrease topic. Sometimes you can use "Die away" instead a verb "Thin out", if it concerns topics such as decrease to a point.