importance
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importance
The quality of being of great significance or relevance; the value or status that a thing or person has.
Der Lehrer erklärte den Schülern die Wichtigkeit von regelmäßigem Lernen.
The teacher explained the importance of regular studying to the students.
'Wichtigkeit' (importance) is an abstract noun derived from the adjective 'wichtig' (important). The ending '-keit' is often used to form nouns from adjectives that describe a quality.
Die Gesundheit ist ein Gut von unschätzbarer Wichtigkeit.
Health is a good of immeasurable importance.
This noun is often used with verbs such as 'betonen' (to emphasize), 'hervorheben' (to highlight), or 'erkennen' (to recognize). A common fixed expression is 'von großer Wichtigkeit sein' (to be of great importance).
Der Chef betonte die Wichtigkeit des neuen Projekts.
The boss emphasized the importance of the new project.
To express what the importance refers to, the genitive is usually used. In spoken language, you also often hear 'von' + dative.
Niemand zweifelt an der Wichtigkeit des Umweltschutzes.
No one doubts the importance of environmental protection.
meaning / importance
'die Bedeutung' and 'die Wichtigkeit' can be used very similarly when talking about the importance of something. Both then say that something is important or plays a major role. 'Wichtigkeit' is more direct and mainly means how important something is. 'Bedeutung' sounds a bit broader and can also include the influence or role of something. In many everyday sentences, you can use both words.
Vor dem Termin betont sie die Wichtigkeit einer guten Vorbereitung.
Before the appointment, she emphasizes the importance of good preparation.
Wegen des trockenen Sommers spricht der Förster über die Bedeutung des Waldes.
Because of the dry summer, the forester talks about the importance of the forest.