Cessez-le-feu vs. trêve

The terms 'cessez-le-feu' and 'trêve' are both French expressions used to describe an interruption in hostilities, especially in a military context. While they can be translated as 'ceasefire' and 'truce' respectively, they convey slightly different nuances and are used in different contexts.

Cessez-le-feu

A 'cessez-le-feu' refers specifically to a temporary stoppage of active military engagement. It is often declared to allow for negotiations between conflicting parties or to provide humanitarian aid.
Les deux pays ont signé un cessez-le-feu après plusieurs mois de conflit.
(The two countries signed a ceasefire after several months of conflict.)
Un cessez-le-feu a été déclaré pour permettre l'évacuation des civils de la zone de guerre.
(A ceasefire was declared to allow the evacuation of civilians from the war zone.)
Les combattants ont violé le cessez-le-feu seulement quelques heures après son annonce.
(The fighters violated the ceasefire just hours after it was announced.)

Trêve

'Trêve' generally refers to an extended pause in hostilities, often for humanitarian reasons, religious or cultural events, or as a gesture of goodwill. It encompasses a broader sense of pause in conflict and can lead to peace negotiations.
Les nations en guerre ont convenu d'une trêve pour les fêtes de fin d'année.
(The warring nations agreed on a truce for the holiday season.)
La trêve entre les factions rivales est entrée en vigueur à minuit.
(The truce between the rival factions came into effect at midnight.)
​Les parties ont utilisé la période de trêve pour engager des pourparlers de paix.
(​The parties used the truce period to commence peace talks.)

Summary

'Cessez-le-feu' and 'trêve' both refer to pauses in fighting, but differ in duration and context. A 'cessez-le-feu' is usually more immediate and brief, intended to halt active military action, possibly leading to further negotiations or humanitarian efforts. In contrast, a 'trêve' indicates a longer pause, which may include special events or broader political moves towards negotiations, and may serve as a symbol of intent to achieve a longer-term peace.