die Ästhetik
aesthetic
The appearance or visual design of something, often in the sense of beauty and harmony.
Die minimalistische Ästhetik der skandinavischen Möbel gefällt mir sehr.
I really like the minimalist aesthetic of Scandinavian furniture.

aesthetics
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aesthetic
The appearance or visual design of something, often in the sense of beauty and harmony.
Die minimalistische Ästhetik der skandinavischen Möbel gefällt mir sehr.
I really like the minimalist aesthetic of Scandinavian furniture.

The noun 'die Ästhetik' (aesthetics / aesthetic) is closely connected to the adjective 'ästhetisch' (aesthetic). While the noun describes the concept or appearance, the adjective evaluates something as tasteful or beautiful.
Die Ästhetik dieses Raumes ist beeindruckend.
The aesthetic of this room is impressive.
When referring to appearance, 'Ästhetik' (aesthetic) is often combined with adjectives that describe a style. Typical phrases are 'eine moderne Ästhetik' (a modern aesthetic), 'eine minimalistische Ästhetik' (a minimalist aesthetic), or 'die Ästhetik der 90er Jahre' (the aesthetic of the 90s).
Der Film besticht durch seine düstere Ästhetik.
The film impresses with its dark aesthetic.
You can recognize the philosophical meaning from the context. It is used in academic or scientific texts and is often connected with the names of philosophers or theories, for example 'die Ästhetik von Kant' (Kant's aesthetics) or 'Theorien der Ästhetik' (theories of aesthetics).
Im Philosophiestudium befasste er sich intensiv mit der Ästhetik des 18. Jahrhunderts.
While studying philosophy, he dealt intensively with the aesthetics of the 18th century.
style
'Stil' and 'Ästhetik' can both have to do with the appearance and design of something. 'Stil' describes the typical way something is made or designed, for example modern, simple, or classic. 'Ästhetik' focuses more on the visual impression and the effect of beauty, harmony, or form. The words can be confused when talking about design, fashion, or art. 'Stil' is more about the type of design, while 'Ästhetik' is more about the visible effect.

Bei der neuen App achtet das Team besonders auf eine klare Ästhetik.
For the new app, the team pays special attention to a clear aesthetic.
Das Café hat einen einfachen Stil mit alten Holztischen.
The café has a simple style with old wooden tables.