Fall behind and Fool around

Fall behind verb - Hang (back) or fall (behind) in movement, progress, development, etc..

Fool around and fall behind are semantically related. In some cases you can use "Fool around" instead a verb "Fall behind".

Fool around verb - To engage in attention-getting playful or boisterous behavior.

Fall behind and fool around are semantically related. Sometimes you can use "Fall behind" instead a verb "Fool around".