die Brüderlichkeit
brotherhood
A feeling of close connection and solidarity between people, similar to that between brothers.
In der Mannschaft herrschte ein starker Geist der Brüderlichkeit.
There was a strong spirit of brotherhood within the team.

brotherhood
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brotherhood
A feeling of close connection and solidarity between people, similar to that between brothers.
In der Mannschaft herrschte ein starker Geist der Brüderlichkeit.
There was a strong spirit of brotherhood within the team.

The word is derived from the adjective 'brüderlich' (brotherly). The ending '-keit' turns adjectives into abstract nouns that describe a feeling or quality, similar to 'Freundlichkeit' (friendliness) or 'Ehrlichkeit' (honesty).
Die Brüderlichkeit unter den Teammitgliedern war der Schlüssel zum Erfolg.
The brotherhood among the team members was the key to success.
'Brüderlichkeit' (brotherhood) is often used in connection with abstract concepts. Typical phrases are 'ein Geist der Brüderlichkeit' (a spirit of brotherhood), 'ein Gefühl von Brüderlichkeit' (a feeling of brotherhood), or 'Brüderlichkeit zeigen' (to show brotherhood).
Der Verein will ein Gefühl von Brüderlichkeit und Zusammenhalt fördern.
The association wants to promote a feeling of brotherhood and solidarity.
This word has a rather elevated and formal style. You often find it in speeches, literary texts, or discussions about social ideals.
In seiner Rede betonte der Präsident die Bedeutung von Frieden und Brüderlichkeit.
In his speech, the president emphasized the importance of peace and brotherhood.
solidarity
'Solidarität' and 'Brüderlichkeit' both describe a close connection between people. 'Solidarität' is the normal word when people or groups support each other because they have shared interests, values, or goals. 'Brüderlichkeit' sounds more like an ideal, almost solemn feeling of human closeness and equality. In everyday language, people usually use 'Solidarität'. 'Brüderlichkeit' fits better in political, historical, or very solemn contexts.

In seiner Rede betonte er Freiheit, Gleichheit und Brüderlichkeit.
In his speech, he emphasized liberty, equality, and brotherhood.
In der Pause sprachen die Mitarbeiter über Solidarität mit den kranken Kollegen.
During the break, the employees talked about solidarity with their sick colleagues.