upheaval / circulation
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upheaval
A profound, often revolutionary change that fundamentally reshapes existing conditions in politics, society, or technology.
Die Erfindung des Internets führte zu einer gesellschaftlichen Umwälzung von historischem Ausmaß.
The invention of the internet led to a social upheaval of historic proportions.
The word is derived from the verb 'umwälzen' (to turn over / to overturn), which literally means 'to turn something heavy completely over.' This image of turning over is used both for social changes and for the circulation of liquids.
Der Bauer muss die Erde auf dem Feld umwälzen.
The farmer has to turn over the soil in the field.
You can recognize the meaning from context. If it is about society, politics, or technology, a profound change is meant. In connection with words like 'Wasser' (water), 'Luft' (air), or 'Pumpe' (pump), it is about the physical process of circulation.
Die digitale Revolution war eine technische Umwälzung.
The digital revolution was a technological upheaval.
In a social context, 'Umwälzung' (upheaval) is often combined with adjectives such as 'sozial' (social), 'politisch' (political), 'gesellschaftlich' (societal), or 'technisch' (technological). Typical verbs are 'verursachen' (to cause), 'erleben' (to experience), or 'führen zu' (to lead to).
Die Industrialisierung führte zu tiefgreifenden sozialen Umwälzungen.
Industrialization led to profound social upheavals.
In the technical meaning, 'Umwälzung' (circulation) usually refers to liquids or gases. A typical device in this context is the 'Umwälzpumpe' (circulation pump), which is used, for example, in heating systems or aquariums.
Ohne die Umwälzpumpe würde das Heizungswasser nicht zirkulieren.
Without the circulation pump, the heating water would not circulate.
revolution
'die Revolution' and 'die Umwälzung' both describe a very major change through which existing conditions become different. 'Revolution' often sounds more like a political overthrow or a rapid, very noticeable innovation. 'Umwälzung' is more general and can also mean a profound change in society, technology, or the economy, without immediately making you think of rebellion or violence. The words are easy to confuse because both express strong change. When political struggle or a sudden breakthrough is important, 'Revolution' fits better; when the restructuring of conditions is the focus, 'Umwälzung' often fits.
Die neuen Maschinen brachten eine große Umwälzung in der Fabrik.
The new machines brought a major upheaval to the factory.
Im Geschichtsunterricht sprechen wir über die Revolution von 1848.
In history class, we are talking about the Revolution of 1848.