to group
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to group
To arrange or organize people or things into groups according to certain criteria or shared features.
Der Lehrer bat die Schüler, die Wörter nach Wortarten zu gruppieren.
The teacher asked the students to group the words by parts of speech.
The verb 'gruppieren' (to group) is derived directly from the noun 'die Gruppe' (the group). It describes the action of forming a group or dividing something into groups.
Können Sie diese Dokumente für mich gruppieren?
Can you group these documents for me?
Pay attention to the difference: without 'sich', you group things (someone groups something). With 'sich', people or things come together as a group on their own (something/someone groups themselves).
Ich gruppiere die Fotos nach Datum.
I group the photos by date.
When ordering things according to a criterion, the preposition 'nach' + dative is often used.
Bitte gruppieren Sie die Teilnehmer nach Alter.
Please group the participants by age.
When people arrange themselves around a center point, the preposition 'um' + accusative is often used.
Die Journalisten gruppierten sich um den Politiker.
The journalists gathered around the politician.
to separate
'trennen' and 'gruppieren' can be opposites when you are organizing things or people. 'trennen' means to separate things from one another or make differences clear. 'gruppieren' means to organize things or people into groups based on shared features. When sorting, you sometimes need both: first you separate different types, then you group similar things.
Im Kurs gruppiert die Lehrerin die Wörter nach Themen.
In the course, the teacher groups the words by topic.
Omar trennt die alten Fotos von den neuen.
Omar separates the old photos from the new ones.