increase
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increase
The enlargement or rise of something in terms of quantity, number, weight, or extent. The opposite is a decrease.
Wir beobachten eine deutliche Zunahme der Online-Bestellungen.
We are observing a significant increase in online orders.
'Die Zunahme' (the increase) is the noun form of the separable verb 'zunehmen' (to increase; to gain weight). If you know the verb, you can easily work out the meaning of the noun.
Die Bevölkerung der Stadt hat in den letzten Jahren stark zugenommen.
The population of the city has increased sharply in recent years.
To indicate the extent of the increase, you use 'eine Zunahme von' (an increase of) + number or percentage. To say what has increased, people often use 'eine Zunahme an' (an increase in) + noun in the dative.
Wir verzeichneten eine Zunahme von fünf Prozent bei den Verkaufszahlen.
We recorded an increase of five percent in sales figures.
'Zunahme' (increase) is often combined with adjectives that describe the extent. Common combinations are 'starke Zunahme' (strong increase), 'deutliche Zunahme' (significant increase), 'leichte Zunahme' (slight increase), or 'rasante Zunahme' (rapid increase).
Die schnelle Zunahme der Temperaturen ist ein Zeichen des Klimawandels.
The rapid increase in temperatures is a sign of climate change.
growth
'das Wachstum' and 'die Zunahme' both mean that something becomes more or larger. 'Zunahme' is very general and fits well with quantities, numbers, weight, or extent. 'Wachstum' sounds more like a process or development, especially with plants, children, companies, or abstract things such as trust. The words can be confused because both describe an upward change. If you only want to say that a quantity is increasing, 'Zunahme' is often appropriate. If you want to emphasize the development of something, 'Wachstum' is more natural.
Nach den Ferien gibt es eine Zunahme der Anmeldungen im Fitnessstudio.
After the holidays, there is an increase in registrations at the gym.
Für das Wachstum der Pflanze braucht der Topf genug Licht und Wasser.
For the plant's growth, the pot needs enough light and water.