Fool around and Let go

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

Let go and fool around are semantically related In some cases you can use "Let go" instead a verb "Fool around".

Let go verb - Release, as from one's grip.

Fool around and let go are semantically related in celebrate topic. Sometimes you can use "Fool around" instead a verb phrase "Let go", if it concerns topics such as revel, have fun.