Fun and Raillery

Fun noun - Someone or something that provides amusement or enjoyment.

Raillery and fun are semantically related in amusement topic. In some cases you can use "Raillery" instead a noun "Fun", when it comes to topics like gibe.

Raillery noun - Good-natured teasing or exchanging of clever remarks.

Fun and raillery are semantically related in jest topic. Sometimes you can use "Fun" instead a noun "Raillery", if it concerns topics such as amusement, banter, gibe, bantering.