Not too long ago, we sent out a lesson on homographs, which are words that are spelled the same and sound the same, but have different meanings. You could also say that it's when one word has various definitions. Anyway, the noun der Gang falls into this category.

One translation of der Gang is "the course," as in a course of events, or the way something happens.

Hier geht alles seinen ruhigen Gang.

Here, everything runs its quiet course.

Caption 21, Die letzten Paradiese - Die Schönheit der Alpen - Part 9

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Just as a course can also refer to part of a meal in English, Germans say der erste Gang for the first course (though probably more often die Vorspeise / "the appetizer") and der Hauptgang for the main course.

Und da kommt auch schon der nächste Gang.

And here comes the next course already.

Caption 18, Die letzten Paradiese - Die Schönheit der Alpen - Part 5

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Now it's time to shift into high gear, for which we can also use der Gang, as it is used to refer to a gear that you would shift into on a bicycle or in a car. Unlike in English, it does NOT refer to a gear in a wristwatch, which is das Zahnrad (die Zahnräder as a plural noun).

Dann legen wir den ersten Gang ein.

Then we shift into first gear.

Caption 17, Fahrschule - Wie man die Kupplung bedient

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Here you can see how der Gang is used to refer to someone's gait or the act of doing a walkthrough.

Es gibt ja viele Frauen, die...

There are many women that....

ja, ihren Gang auch ein bisschen verbessern können.

yes, can also improve their walk a little bit.

Caption 15, Auf dem Laufsteg - Modelcollege in Wiesbaden

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... deshalb schwingt bei einem Gang durch das Museum auch viel Nostalgie mit.

... therefore a tour through the museum also resonates with a lot of nostalgia.

Caption 23, Flipperautomaten - Kunstwerke für flinke Kugeln

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And then there's the very common translation of der Gang as a hallway or corridor:

Der rechte Gang und dann ganz hinten links.

The right hallway and then all the way in the back on the left.

Caption 18, Mein Weg nach Deutschland - Auf Arbeitssuche

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Further Learning
You'll find many instances of der Gang used on Yabla German, but why not also try to formulate your own sentences?