Slow down and Thin out

Slow down verb - Lose velocity; move more slowly.

Thin out and slow down are semantically related in reduce the strength of topic. In some cases you can use "Thin out" instead a verb "Slow down".

Thin out verb - Make sparse.

Slow down and thin out are semantically related in reduce the strength of topic. Sometimes you can use "Slow down" instead a verb "Thin out".