褐 is the most simple way to express brown in Chinese.

It also means brown in Japanese but this character is not often written alone in Japanese (they would tend to write 褐色 (brown color) to refer to brown or the color of tanned skin.

In some contexts, this can refer to gray or a dark color, or coarse hemp cloth.

In the Buddhist context, it can refer to a coarse serge (cheaply sewn clothing) hence poverty.

Note: In Taiwanese Mandarin, this is spoken with the 2nd or rising tone instead of the 4th or falling tone used in the mainland.

地 is the single-character element and title of the planet Earth in Chinese, old Korean Hanja, and Japanese Kanji.

Because this is a single character, the definition is a little ambiguous and can have many meanings depending on the context in which it is used. These meanings include: earth, ground, land, soil, dirt, place, territory, bottom (of a package, book, etc.), earth (one of the Japanese five elements), the region in question, the local area, skin, texture, fabric, material, weave, base, background, one's true nature, narrative (i.e. descriptive part of a story), real life, actuality, etc.

In Japanese, this Kanji can be pronounced several ways, including chi, ji, tsushi, or tsuchi.
地 is also an element of the Japanese version of the five elements (the original Chinese version uses a different version of earth).