kollektiv
collective
An action or decision that is carried out or made jointly by a group of people as a unit.
Das Team hat kollektiv beschlossen, das Projekt abzubrechen.
The team collectively decided to cancel the project.

collective
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collective
An action or decision that is carried out or made jointly by a group of people as a unit.
Das Team hat kollektiv beschlossen, das Projekt abzubrechen.
The team collectively decided to cancel the project.

The adjective 'kollektiv' (collective) is closely related to the noun 'das Kollektiv' (the collective), which refers to a group of people who work together or pursue a common goal.
Ein Künstlerkollektiv hat die Fassade des Gebäudes gestaltet.
An artists' collective designed the facade of the building.
'Kollektiv' (collective/collectively) can be used as an adverb to describe a verb, or as an adjective before a noun. As an adverb, it often comes after the conjugated verb.
Die Mitarbeiter haben kollektiv für längere Pausen gestimmt.
The employees collectively voted for longer breaks.
The adjective is often combined with nouns that describe an action, a feeling, or a concept. Typical examples are: 'kollektive Entscheidung' (collective decision), 'kollektives Gedächtnis' (collective memory), or 'kollektives Versagen' (collective failure).
Das kollektive Gedächtnis einer Nation wird durch Denkmäler geprägt.
The collective memory of a nation is shaped by monuments.
alone / only
'allein' and 'kollektiv' are opposites when it comes to actions or decisions. Here, 'allein' means that one person does something without help or without others. 'kollektiv' means that a group acts or decides together. 'allein' works well for personal responsibility or an individual action. 'kollektiv' fits when the group as a unit is important.

Bei der Arbeit trifft das Team wichtige Entscheidungen kollektiv.
At work, the team makes important decisions collectively.
Er hat den Umzug fast allein organisiert.
He organized the move almost entirely on his own.