der Ritus
rite
A fixed, formal, and often ceremonial action or sequence of actions, especially in a religious or solemn context.
Die Taufe ist ein wichtiger Ritus im Christentum.
Baptism is an important rite in Christianity.

rite / ritual
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rite
A fixed, formal, and often ceremonial action or sequence of actions, especially in a religious or solemn context.
Die Taufe ist ein wichtiger Ritus im Christentum.
Baptism is an important rite in Christianity.

The meaning of 'Ritus' (rite/ritual) becomes clear through the adjectives. Words like 'religiös' (religious), 'kirchlich' (church-related), or 'antik' (ancient) point to a ceremonial action. Adjectives like 'täglich' (daily), 'persönlich' (personal), or 'morgendlich' (morning) describe a fixed habit.
Die Krönung des Königs folgte einem jahrhundertealten Ritus.
The coronation of the king followed a centuries-old rite.
When referring to a ceremonial rite, formal verbs such as 'vollziehen' (to perform/carry out), 'durchführen' (to carry out), or 'begehen' (to observe/celebrate) are often used.
Der Priester vollzog den Ritus der Segnung.
The priest performed the rite of blessing.
This meaning describes an action that has become so regular and important that it feels almost like a ceremony. It often involves personal or social habits.
Das Treffen mit seinen Freunden am Freitagabend war für ihn ein fester Ritus.
Meeting his friends on Friday evening was a fixed ritual for him.
custom
'der Brauch' and 'der Ritus' both describe actions that are repeated regularly and can have a special meaning. 'Brauch' is especially suitable for traditions in a family, region, or culture, for example at festivals. 'Ritus' sounds more formal and often means a fixed sequence of actions, especially in religious or ceremonial situations. In everyday life, 'Ritus' can also mean a personal, almost ceremonial habit. Learners may confuse the words because both have to do with repeated actions. As a simple guide: a 'Brauch' belongs more to a community, while a 'Ritus' is usually more strictly regulated or more ceremonial.

Vor der Zeremonie erklärt der Priester den Ritus Schritt für Schritt.
Before the ceremony, the priest explains the rite step by step.
In meiner Familie ist es ein alter Brauch, am ersten Feiertag gemeinsam zu essen.
In my family, it is an old custom to eat together on the first holiday.