The upper stroke 一 can be seen as the horizon, with variations of sun 日 and two legs 儿, which stand for a downward motion: Below the horizon sinks the sun (at sunset) in the west.
A horned 廿 animal seen from above with a backbone 丨 and broad hips 一 has a skin 囗 of leather around its torso. - This radical 皮 also stands for leather.
The radical tsuki stands for moon or month when used at the right side of a character. However the radical niku 肉 that stands for body or body-part is in many cases simplified to 月 and thus looks equal as "moon".
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