Fool around and Have sexual intercourse

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

Have sexual intercourse and fool around are semantically related In some cases you can use "Have sexual intercourse" instead a verb "Fool around".

Fool around and have sexual intercourse are semantically related in have sex topic. You can use "Fool around" instead a verb phrase "Have sexual intercourse", if it concerns topics such as have sex with different partners.