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Obst vs. Frucht

In German, the words Obst and Frucht both relate to fruit but are used in slightly different contexts.

Obst

A1
The word Obst refers specifically to edible fruits that are consumed as food. It generally refers to common fruit that people eat regularly.
Ich esse jeden Morgen Obst zum Frühstück.
(I eat fruit every morning for breakfast.)
Der Markt hat eine große Auswahl an frischem Obst.
(The market has a wide variety of fresh fruit.)
Obst ist gesund und enthält viele Vitamine.
(Fruit is healthy and contains many vitamins.)

Frucht

B1
Frucht is a broader term that can refer to both edible and non-edible fruits, including botanical fruits that might not necessarily be consumed by people. It can also be used in more scientific or formal contexts.
Die Tomate ist botanisch gesehen eine Frucht, obwohl sie oft als Gemüse betrachtet wird.
(The tomato is botanically a fruit, although it is often considered a vegetable.)
Exotische Früchte wie die Drachenfrucht sind manchmal schwer zu finden.
(Exotic fruits like dragon fruit are sometimes hard to find.)
In der Biologie lernt man, dass viele Pflanzen Früchte produzieren, um ihre Samen zu verbreiten.
(In biology, you learn that many plants produce fruits to distribute their seeds.)

Summary

Obst and Frucht both refer to fruits but in different contexts. Obst is used primarily for edible fruits consumed as food, while Frucht has a broader meaning, including non-edible and botanical fruits.