Difference between sidereal and tropical zodiac explained

[Sarah]

I watched the first video from learning the language and I didn’t understand the fundamental difference between these two systems. I’ve also seen a video you posted about this on youtube and found it difficult to understand. There’s the path of the suns ecliptic and this ecliptic is mapped onto the fixed stars with the houses and signs in the sidereal, however a different calculation is used than with the tropical based on the ecliptic? Aries always starts at zero degrees in the tropical system vs a different calculation for the sidereal? I don’t really understand what’s going on.

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