undertaking / enterprise
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undertaking
A planned action, project, or activity that is often connected with a certain amount of effort or risk.
Die Expedition zum Nordpol war eine gefährliche Unternehmung.
The expedition to the North Pole was a dangerous undertaking.
enterprise
A synonym for a company or firm; an economic organization.
Er leitet eine große Unternehmung mit mehreren hundert Angestellten.
He runs a large enterprise with several hundred employees.
'Die Unternehmung' (the undertaking/enterprise) is the nominalization of the verb 'unternehmen' (to undertake). The ending '-ung' turns the verb into a feminine noun that describes either the action itself or the result.
Wir planen eine gemeinsame Unternehmung am Wochenende.
We are planning a joint activity for the weekend.
You can recognize the meaning from the context: If it is about an activity or project, it means 'Vorhaben' (undertaking/project). If it is about an economic organization run by someone, it means 'Firma' (company).
Die Besteigung des Berges war eine anstrengende Unternehmung.
Climbing the mountain was a strenuous undertaking.
When it refers to an undertaking, 'Unternehmung' is often combined with adjectives that describe risk or adventure, such as 'gewagt' (daring), 'riskant' (risky), 'kühn' (bold), or 'spannend' (exciting).
Seine Weltreise mit dem Fahrrad war eine kühne Unternehmung.
His trip around the world by bicycle was a bold undertaking.
In the meaning of 'Firma' (company), 'Unternehmung' is used less often and can sound somewhat formal or old-fashioned. It is more typical of written language, especially in legal or economic texts.
Die rechtlichen Dokumente der Unternehmung sind vollständig.
The legal documents of the enterprise are complete.
company / undertaking
Unternehmen and Unternehmung can both refer to a planned action that involves effort or risk. In this usage, there is no fixed difference in meaning according to the meanings given; both words work for the same challenging undertaking.
Die Expedition in das Eis war eine riskante Unternehmung.
The expedition into the ice was a risky undertaking.
Die Expedition in das Eis war ein riskantes Unternehmen.
The expedition into the ice was a risky undertaking.
