Amusement vs. divertissement vs. plaisir

While all three words - 'amusement', 'divertissement', and 'plaisir' - can be translated as 'fun' in English, they have subtle differences in nuance and usage.

Amusement

'Amusement' emphasizes the act of being entertained or occupied by something light-hearted and enjoyable. It often implies light entertainment or activities that bring immediate enjoyment.
J'ai trouvé son histoire pleine d'amusement.
(I found his story to be full of amusement.)
Les jeux vidéo sont une source d'amusement pour les enfants.
(Video games are a source of amusement for children.)

Divertissement

'Divertissement' focuses more on distraction or diversion from something else. It implies an activity that helps pass the time or takes the mind off something else, not necessarily light-hearted or joyful.
La lecture est un bon divertissement pendant les longs voyages.
(Reading is good entertainment on long journeys.)
Ils ont organisé des divertissements pour les soldats blessés à l'hôpital.
(They organized entertainment for the injured soldiers at the hospital.)

Plaisir

'Plaisir' refers to the general feeling of enjoyment, satisfaction, or pleasure. It is broader and deeper than 'amusement' and encompasses a wider range of positive experiences, not just light-hearted entertainment.
J'ai pris du plaisir à passer du temps avec mes amis.
(I enjoyed spending time with my friends.)
Elle trouve du plaisir à cuisiner pour sa famille.
(She finds pleasure in cooking for her family.)

Summary

While 'amusement', 'divertissement' and 'plaisir' all refer to the concept of fun in French, they each have their own unique shades of meaning. 'Amusement' often refers to momentary entertainment or laughter, 'divertissement' refers to an activity that provides an escape from boredom or stress, and 'plaisir' embodies a wide range of pleasures, from simple joys to more profound satisfactions.